2. Historia de las Grúas
Antiguamente las gruas eran mas
pesadas de lo que podian levantar, por
ende eran mas resistentes, pero
basicamente perdian su estabilidad y el
operador del equipo era quien tenia que
saber hasta donde podia llegar con la
carga para que no se volcara.
Ademas no tenian los estabilizadores
que actualmente se usan, trabajaban
sobre sus ruedas.
3. Historia de las Grúas
Este concepto de operación ya no se usa
4. Historia de las Grúas
Nacieron los estabilizadores reduciendo el trabajo de
los neumáticos
5. Historia de las Grúas
Luego nacieron los estabilizadores de cajón
extensible incrementando la estabilidad en un 50 %,
consistían en un cajón del ancho de la carrocería del
cual nacían los estabilizadores a cada lado.
6. Historia de las Grúas
Luego salieron estabilizadores extensibles de doble
caja separados, incrementando la estabilidad en 100
%.
7. Historia de las Grúas
Luego salieron extensiones
telescópicas de doble caja separados,
incrementando la estabilidad en 150 %.
8. Palancas
La palanca es una máquina simple compuesta por una barra rígida que
puede girar libremente alrededor de un punto de apoyo, o fulcro.
Puede utilizarse para amplificar la fuerza mecánica que se aplica a un
objeto, o para incrementar la distancia recorrida por un objeto en
respuesta a la aplicación de una fuerza.
Una palanca está en equilibrio cuando el momento de fuerza total hacia
la izquierda es igual al momento de fuerza total hacia la derecha.
En Física, el momento es el producto de la fuerza aplicada por la
distancia entre el punto de aplicación y el punto de rotación del cuerpo.
En una palanca, la distancia entre el fulcro y el punto de aplicación de
una fuerza se denomina "brazo de palanca".
Entonces, el principio de la palanca afirma que una fuerza pequeña
puede estar en equilibrio con una fuerza grande si la proporción entre
los brazos de palanca de ambas fuerzas es la adecuada.
9. En la forma más común de uso de la palanca se considera únicamente a
dos fuerzas: una carga o resistencia, que suele ser el peso de un objeto
que se desea mover; y una potencia, que es la fuerza que se ejerce para
causar el movimiento. FpBp = FrBr
Donde Fp y Fr son las fuerzas de potencia y resistencia, respectivamente;
y Bp y Br sus respectivos brazos de palanca.
Sube y baja
Carretilla
El eje se encuentra entre la
resistencia y el esfuerzo
La resistencia se
encuentra entre el eje y el
esfuerzo
10. En la palanca de tercer tipo, la fuerza de
potencia se encuentra entre el fulcro y la fuerza
de resistencia. El tercer tipo es notable porque
la fuerza aplicada debe ser mayor que la
fuerza que se requeriría para mover el objeto
sin la palanca. Este tipo de palancas se utiliza
cuando lo que se requiere es amplificar la
distancia que el objeto recorre.
Brazo humano
El esfuerzo se encuentra entre el el eje y la
resistencia.
16. Definiciones
• Grúa – Consiste en una estructura rotatoria
para levantar y bajar cargas, montada sobre
ruedas con neumáticos o sobre “orugas”.
• Sistema de Levantamiento (Hoist) – Aparato
parte de la grúa usado para elevar y bajar la
carga.
• Brazo o Pescante – Una columna inclinada u
otro miembro largo soportando el mecanismo
elevador (hoisting tackle) y la carga.
17. Definiciones
• Límites del Brazo o Pescante – Un dispositivo
usado para limitar el ángulo del brazo o
pescante cuando está en su posición más alta.
• Freno – Dispositivo para reducir o parar el
movimiento por fricción o potencia.
• Bloque ( Block) – Sistema de poleas montadas
en un soporte.
18. Definiciones
• Extensión del Pescante (Jib) – Extensión agregada al
brazo o pescante de la grúa a fin de aumentar la
longitud del brazo cuando se levantan ciertas cargas
específicas.
• Equipo hidráulico.
Los cilindros hidráulicos de extensión e inclinación de
pluma y los verticales de los gatos estabilizadores
deberán ir provistos de válvulas de retención que
eviten la recogida accidental de los mismos en caso de
rotura o avería en las tuberías flexibles de conexión.
En el circuito de giro deberá instalarse un sistema de
frenado que amortigüe la parada del movimiento de
giro y evite, asimismo los esfuerzos laterales que
accidentalmente pueden producirse. Además de esta
válvula, se instalará un freno mecánico de emergencia.
19. Definiciones
• Cables.
Se cumplirá con lo especificado en las
normas
• Ganchos
En la norma se define su modo de
sujeción, forma y utilización. Asimismo,
todo gancho debe llevar incorporado el
correspondiente cierre de seguridad que
impida la salida de los cables.
20. Definiciones
• Contrapesos.
Aquellas grúas en que sea necesaria la utilización de un
contrapeso constituido en uno o varios bloques desmontables
dispondrán de las fijaciones necesarias del contrapeso a la
estructura para evitar desprendimiento
• Cabina de mando
Las cabinas serán de construcción cerrada y se instalarán de
modo que el operador tenga durante las maniobras el mayor
campo de visibilidad posible, tanto en las puertas de acceso
como en los laterales y ventanas.
Las cabinas estarán provistas de accesos fáciles y seguros
desde el suelo, y en su interior se instalarán diagramas de cargas
y alcances, rótulos e indicativos necesarios para la correcta
identificación de todos los mandos e iluminación.
22. Definiciones
• Corona de orientación
Las coronas de orientación que se instalen en las
grúas móviles autopropulsadas, así como los
sistemas utilizados para su unión a las partes de
las mismas (base y estructura), serán de capacidad
suficiente para resistir los esfuerzos producidos
por el funcionamiento de la grúa.
En cualquier caso, y siempre que sea posible,
deberá asegurarse el acceso de los útiles
necesarios para verificar o, en su caso, aplicar los
pares de aprietes que correspondan a la calidad de
la tornillería establecida por el fabricante de la
corona.
23. Definiciones
• Otros elementos de seguridad
Las grúas móviles autopropulsadas deberán estar provistas como
mínimo de los siguientes elementos de seguridad, además de los
indicados anteriormente:
a) Grúas hasta 80 toneladas o longitud de pluma con o sin plumín
<= 60 metros:
1.º Final de carrera del órgano de aprehensión.
2.º Indicador del ángulo de pluma.
b) Grúas de más de 80 toneladas o longitud de pluma con o sin
plumín > 60 metros:
1.º Final de carrera del órgano de aprehensión.
2.º Indicador del ángulo de pluma.
3.º Indicador de carga en ganchos o indicador de momento de
cargas, o un limitador de cargas.
24. Definiciones
• Grua de Oruga.- consiste de una superestructura con motor,
maquinaria operativa y pluma, montados sobre una base,
equipado con orugas para desplazarse. Su funcion es izar y girar
cargas a varios radios.
• Grua de Camion.- consiste de una superestructura rotativa con
maquinaria operativa y pluma, montado sobre un camion
comercial equipado con motor para desplazarse. Su funcion es
izar y girar cargas a varios radios.
• Grua sobre ruedas.- consiste de una superestructura rotativa con
motor, maquinaria operativa y pluma, montados sobre una base o
plataforma equipada con ejes y neumaticos para desplazarse. Su
funcion es izar y girar cargas a varios radios.
25. Definiciones
• Eje de Rotación.- es el vertical alrededor del cual gira la
superestructura de la grúa.
• Radio Operacional.- Distancia horizontal desde la
proyeccion del eje de rotacion de la grúa hasta el
centro de la linea vertical de enganche de la carga.
• Angulo de pluma.- es el angulo formado entre la linea
central longitudinal de la pluma y el plano horizontal. La
linea central longitudinal es una linea recta entre la
linea central del perno (pasador) de la base de la pluma
y la linea central del perno de las poleas de punta de la
punta de la pluma.
26. Definiciones
• Angulo de pluma cargado.- valor entregado en
las tablas de carga que se encuentra entre la
seccion de la base de la pluma y la horizontal,
depues de levantar la carga en el radio de
operacion.
• Indicador de angulo.- es el accesorio que mide el
angulo entre la pluma y el plano horizontal
• Area de trabajo.- son sectores medidos en un
arco circular con referencia al centro de rotacion.
27. Definiciones
• Carga libremente suspendida.- es la que se
encuentra colgada libremente sin ninguna
fuerza directa externa actuando sobre ella
excepto por el cable de izaje.
• Carga lateral.- es la fuerza horizontal aplicada a
la carga izada sea en el suelo o en el aire.
• Indicador de Momento de Carga – IMC.- Es la
cantidad o capacidad de esfuerzo de la grua o
cuanta palanca hace la pluma (los cilindros
reciben toda la presion.
28. Definiciones
• Momento de Carga.- es generalmente el
producto de una fuerza y su brazo de
momentos, especialmente el producto de
la carga y del radio de la carga utilizado
para determinar la capacidad de elevacion
de las gruas.
• Accesorio de Levante.- es un componente
secundario o un montaje de piezas que
contribuyen a la funcion general y utilidad
de una maquina.
29. Definiciones
• Eje de Rotacion.- es el eje vertical alrededor del cual
gira la superestructura de la grua.
• Eje.- es el montaje sobre el cual o por medio del cual
gira una rueda. En cuanto a gruas de camion se refiere
a un tipo de montajes de ejes automotores que incluye
una caja, engranajes, diferencial, rodamientos y
accesorios de montaje.
• Eje doble (boogie).- son dos o mas ejes automotores
montados en conjunto dentro del armazon de una
carroceria lo cual divide el peso de la carga entre los
ejes lo cual permite la oscilacion vertical de las ruedas.
30. Definiciones
• ANSI.- Instituto Nacional Americano de Normas.
• Base de Montaje.- es la base viajera o de carga
sobre el cual esta montado y gira una
superestructura, tal como un camion a orugas
o neumaticos.
• Pluma de una grua.- es un componente capaz
de inclinarse hacia arriba o para abajo y es
montado al frente de la superestructura
giratoria. El extremo exterior es apoyado por
medio de cables que van hasta un mastil del
marco tipo A que es usado para apoyar el
equipo de aparejo.
31. Definiciones
• Malacate de la pluma.- es un tambor de izaje y
un sistema de cables pasado por poleas, usado
para levantar y bajar la pluma. El sistema de
cables podria ser una combinacion activa y con
tensores.
• Tope de pluma.- es un dispositivo usado para
limitar el angulo de la pluma en la posicion mas
alta.
• Contrapeso.- es un peso usado para
complementar el peso de la maquina al proveer
estabilidad para alzar cargas de trabajo.
32. Definiciones
• Tambor.- es la parte cilindrica alrededor del
cual los cables son enrollados para levantar y
bajar la carga o la pluma.
• Carga Dinamica.- significa la tension de cargas
externas introducidas a la maquina o sus
componentes por la fuerza del movimiento.
• Caballete armazon A.- es un marco estructural
que se extiende por encima de la
superestructura, en la cual los cables de apoyo
son enrollados.
33. Definiciones
• Aguilon o plumin.- es una extension
fijada a la punta de la pluma para proveer
extension adicional de la pluma para
alzar cargas especificas. El aguilon
puede estar en linea con la pluma o
resaltado a varios angulos.
• Bloque de Carga (fijo/de arriba).- es el
montaje de gancho o grillete giratorio,
poleas, pernos y marco suspendido de la
punta de la pluma.
34. Definiciones
• Bloque de Carga (viajera /de abajo).- es el
montaje de gancho o grillete giratorio, poleas,
pernos y marco suspendido de los cables de
izamiento.
• Capacidad de Carga.- es la capacidad de la
grua establecida por el fabricante y expresado
en valores de acuerdo a las normas
establecidas.
• Estabilizadores laterales.- son vigas de metal
extensibles o fijas, adjuntos a la base de
montaje, los cuales descansan sobre apoyos
en los extremos exteriores.
35. Definiciones
• Enhebrado.- es el sistema de cables en
donde estos viajan alredeor de tambores
y poleas.
• Cable.- cable de alambre de acero.
• Cable tensor.- es un cable de apoyo el
cual mantiene una distancia constante
entre los puntos de acoplamiento entre
los dos componentes conectados por el
cable.
36. Definiciones
• Competencia estructural.- es la habilidad de la
maquina y sus componentes de aguantar las
tensiones impuesto por cargas aplicadas al
sistema.
• Superestructura.- es la estructura y armazon
superior giratoria de la maquina y la maquinaria
operativa montada en ella.
• Giro.- es la rotacion de la superestructura
mediante la cual se mueven las cargas en una
direccion horizontal alrededor del eje de
rotacion.
37. Definiciones
• Aparejo.- es un montaje de cables y poleas
arregladas para izar y jalar.
• Distancia entre ejes.- es la distancia entre los
centros del eje delantero y el eje rasero. En
cuanto a montajes de ejes multiples, el centro
del eje usado para la medida de la distamcia se
toma desde el punto central de montaje.
• Winche.- es un tambor propulsado mediante
energia externa par el manejo de cargas por
medio de friccion entre sogas de fibra o cables
de alambre y el tambor.
38. Definiciones
• Winche de Carga (Principal).- es un
tambor y sistema de cable y polea usado
para izar y bajar cargas.
• Winche de Carga auxiliar (Secundario).-
es un sistema separado de cable de
izamiento, con una capacidad de carga
menor pero mayor velocidad que la que
provee el Wiche principal.
39. Cables de Acero
• El Cable de Acero está compuesto de un
conjunto de elementos que transmiten
fuerzas, movimientos y energía entre dos
puntos, de una manera predeterminada
para lograr un fin deseado.
• El conocimiento pleno del inherente
potencial y uso de un Cable de Acero, es
esencial para elegir el cable más adecuado
para una faena o equipo
40. Cables de Acero
• Cada cable de acero, con sus variables
de diámetro, construcción, calidad de
alambre, torcido, y su alma; se diseñan y
fabrican cumpliendo las Normas
Internacionales como:
• American Petroleum Institute (A.P.I. Standard 9A)
• American Federal Specification (RR-W-410D)
• American Society For Testing & Materials (A.S.T.M.)
• British Standards Institute (B.S.I)
• Deutsches Normenausschuss (D.I.N.)
• International Organization for Standardization (I.S.O.)
41. Cables de Acero
SUS ELEMENTOS
• Alambre: Es el componente básico del
cable de acero, el cual es fabricado en
diversas calidades, según el uso al que
se destine el cable final.
• Torón: Está formado por un número de
alambres de acuerdo a su construcción,
que son enrollados helicoidalmente
alrededor de un centro, en una o varias
capas.
42. Cables de Acero
• Alma: Es el eje central del cable donde
se enrollan los torones. Esta alma puede
ser de acero, fibras naturales o de
polipropileno.
• Cable: Es el producto final que está
formado por varios torones, que son
enrollados helicoidalmente alrededor de
un alma.
45. Cables de Acero
Grados
Según la calidad nominal del acero de sus alambres, definida por su
resistencia nominal a la tracción, número de torsiones, doblados,
adherencia del recubrimiento de zinc, uniformidad del recubrimiento de
zinc y peso del recubrimiento de zinc se designaran por:
46. Cables de Acero
TORONES
Los Torones de un cable de acero, están formados por un
determinado número de alambres enrollados
helicoidalmente alrededor de un alambre central y
dispuestos en una o más capas. A cada número y
disposición de los alambres se les llama
CONSTRUCCION y que son fabricados generalmente
según el concepto moderno, en una sola operación con
todos los alambres torcidos en el mismo sentido,
conjuntamente en una forma paralela. En esta manera se
evitan cruces y roces de los alambres en las capas
interiores, que debilitan el cable y reducen su vida útil y
puede fallar sin previo aviso.
47. Cables de Acero
Las principales construcciones de los torones, se pueden
clasificar en tres grupos:
Grupo 7: Incluyen construcciones que tienen desde 3 a 14
alambres.
Grupo 19: Incluyen construcciones que tienen desde 15 a
26 alambres.
Grupo 37: Incluyen construcciones que tienen desde 27 a
49 alambres.
El torón según el requerimiento del cable final, puede ser
torcido a la derecha o a la izquierda.
48. Cables de Acero
ALMAS
El Alma es el eje central o núcleo de un cable, alrededor
del cual van colocados los torones.
Su función es servir como base del cable, conservando su
redondez, soportando la presión de los torones y
manteniendo las distancias o espacios correctos entre
ellos.
Hay dos tipos principales de Almas:
Fibra (Naturales y Sintéticas)
Acero (de Torón o lndependiente)
49. Cables de Acero
El cable se identifica por el número de torones y el número de 2
alambres de cada torón, su tipo de alma y si son negros o
galvanizados.
Grupos
Las principales grupos de cables son:
• Grupo 6x7 (con 3 a 14 alambres por torón)
• Grupo 6X19 (Con 15 a 26 Alambres por Torón)
• Grupo 6X26
• Grupo 6 x 37 (Con 27 a 49 Alambres por Torón)
• Grupo 8 x 19
50. Cables de Acero
Grupo 6x7 (con 3 a 14 alambres por torón)
Aunque hay varias alternativas en esta serie la mas común es
donde cada uno de los seis torones que forman el cable, está
construido de una sola hilera de alambres colocado alrededor de
un alambre central. Debido a que el número de alambres (7) que
forman el torón es reducido, nos encontramos con una
construcción de cable armado por alambres gruesos que son
muy resistentes a la abrasión, pero no recomendable para
aplicaciones donde requiere flexibibilidad.
Diámetro mínimo de poleas y tambores. 42 veces el diámetro
del cable.
51. Cables de Acero
Grupo 6X19 (Con 15 a 26 Alambres por Torón)
Existen varias combinaciones y construcciones de cables en
este grupo, los torones se construyen usando de 15 hasta 26
alambres, lo que facilita la selección del cable mas adecuado
para un trabajo determinado.
Anteriormente, la construcción mas en uso en cables mayores
a 8 mm. de diámetro era la construcción 6x 19 Filler
(12/6F/6/1), conocido también como 6x25 por tener la ventaja
de tener un nivel de resistencia a la abrasión y aplastamiento
aceptable, pero también suficiente flexibilidad para trabajar en
poleas o tambores que no tengan un diámetro muy reducido en
relación al diámetro del cable.
52. Cables de Acero
La construcción 6 x 19 Filler está formada por seis torones
de 25 alambres cada uno que están integrados por dos
capas de alambres principales colocados alrededor de un
alambre central, con el doble de alambres en la capa
exterior (12) a los que tienen la capa interior (6). Entre
estas dos capas se colocan 6 alambres más delgados,
como relleno (Filler) para darle la posición adecuada a los
alambres de la capa exterior.
Diámetro mínimo de poleas y tambores: 26 veces el
diámetro del cable. Con el pasar del tiempo ha surgido
otra construcción que está reemplazando el diseño
anterior debido a que se ha demostrado que este nuevo
diseño ofrece un mayor rendimiento y utilidad para los
usuarios.
53. Cables de Acero
Grupo 6X26
La construcción 6 x 26 está formada por seis torones con
26 alambres cada uno, que están integrados por tres capas
de alambres colocados alrededor de un alambre central En
la capa exterior hay 10 alambres la capa intermedia hay 5
alambres de un diámetro y 5 alambres de un diámetro
interior puestos en una manera alternada y la capa interior
también tiene 5 alambres puestos sobre un alambre
central.
Aunque esta construcción tiene una flexibilidad un poco
menor que la construcción antigua (6 x 25), la construcción
6 x 26 tiene una sección de acero mas sólida y alambres
exteriores mas gruesos, por lo tanto, tiene una mayor
resistencia a la compresión y a la abrasión.
54. Cables de Acero
Grupo 6 x 37 (Con 27 a 49 Alambres por Torón)
Las construcciones de este equipo son más flexibles que las de los grupos
6 x 7 y 6 x 19, debido a que tienen un mayor número de alambres por
torón. Este tipo de cables se utiliza cuando se requiere mucha flexibilidad.
No se recomiendan cuando son sometidos a una abrasión severa, porque
el diámetro de sus alambres externos es pequeño.
En este grupo la construcción 6 x 37 es generalmente encontrada en
cables con diámetros menores a 9 mm. En diámetros superiores a 8 mm
los cables son fabricados con el concepto moderno con todos los
alambres torcidos conjuntamente en una forma paralela en cada torón,
evitando roce interno y logrando una mayor útil.
Como existen varias construcciones en este grupo, se presentan las de
mayor uso y sus rangos de diámetros para obtener el óptimo rendimiento.
Diámetro mínimo de poleas y tambores. 23 veces el diámetro del cable.
55. Cables de Acero
Grupo 8 x 19
Además de los grupos antes señalados, es conveniente
mencionar las series 8 x 19 que están fabricado con 8
torones alrededor de un alma (generalmente de fibra). Al
utilizar 8 torones en vez de 6, hace que el cable sea mas
flexible, pero debido a que este tipo de cable tiene un alma
mas grande que los cables de 6 torones, lo hace menos
resistente al aplastamiento.
Existen construcciones en esta serie tanto con almas de
fibra, almas de acero y almas de acero plastificadas para
usos bien especificados sobre los cuales hay antecedentes
mas adelante.
56. Cables de Acero
Torcido de los Cables
Los cables generalmente se fabrican en torcido
REGULAR y torcido LANG, en los cables con torcido
REGULAR, los alambres del torón están torcidos en
dirección opuesta a la dirección de los torones en el
cable. Los alambres y los torones en un cable torcido
LANG están torcidos en la misma dirección de los torones
en el cable
59. Cables de Acero
Grúas de gran altura de elevación.
Se emplean en estos casos cables anti-giratorios, sobre
todo si la carga está soportada por un solo ramal, y no
puede ir guiada. Los cables anti-giratorios deben estar
siempre sometidos a tensión, por lo cual es siempre
necesario colocar en el gancho un contrapeso lo
suficientemente pesado para que mantenga siempre
tendido el cable, aún cuando le falte carga.
Al no contar con cables anti-giratorios, se pueden utilizar
cables de 8 torones con alma mixta o cables de 6
torones y alma de fibra.
60. Cables de Acero
Puentes grúa.
En los puentes grúa de las acerías de los cables
trabajan cerca de importantes focos de calor; es
necesario, en tales casos, proveer al cable de un
alma metálica, en lugar del alma de fibra. De ello
resulta que el peso y la resistencia a la rotura del
cable quedan mejorados en un 11%
aproximadamente y el diámetro en un 5%
respecto de las características de los mismos
cables con alma de fibra.
61. Cables de Acero
Cables guías.
Los cables empleados como guías de pozo suelen ser
de tipo compacto, con alambres exteriores más
gruesos que los del núcleo, lo que fácilmente se
comprende si se tiene en cuenta que estos cables
han de resistir fuertes abrasiones, al resbalar sobre
ellos las deslizaderas de las jaulas, y la acción
corrosiva de la atmósfera húmeda de los pozos.
62. Cables de Acero
Se exigen a este tipo de cables lo siguiente:
i) Gran superficie efectiva de contacto.
ii) Gruesos alambres exteriores.
iii) Empleo de aceros poco frágiles, pero de
suficiente dureza superficial.
El cable se mantendrá en servicio mientras el grado
de seguridad no descienda hasta 3.
63. Cables de Acero
INSPECCION DEL EQUIPO
Los factores principales que acortan la vida de los cables de
acero son los defectos y fallas en el equipo en que se
instalan. Las siguientes sugerencias son una guía para
revisar las partes del equipo que causan la mayor parte de
los problemas.
Inspeccionar cuidadosamente el sistema de anclaje del cable
tanto en los tambores como en la carga, asegurándose de
que los terminales estén correctamente colocados. Presten
especial atención a que los dispositivos de seguridad
funcionan adecuadamente.
64. Cables de Acero
INSPECCION DEL EQUIPO
Inspeccionar los canales, gargantas y superficies de todos
los tambores, rodillos y poleas. Usar calibradores de poleas
para comprobar los diámetros correctos. Ver que todas las
superficies que hacen contacto con el cable sean lisas y
estén libres de corrugaciones u otras condiciones de
abrasión.
Comprobar el libre movimiento de las poleas y la alineación
correcta de sus ejes y rodamientos. Es indispensable que los
rodamientos proporcionen el apoyo adecuado y que estén
libres de bamboleo.
65. Cables de Acero
INSPECCION DEL EQUIPO
Comprobar el enrollado del cable en el tambor, el cual debe
ser uniforme. El enrollado irregular produce aplastamiento
del cable.
Revisar la ubicación de los rellenos iniciales y elevadores en
el tambor, en caso de que sean usadas. Su ubicación
incorrecta causa "cocas" y "cruces" entre las diversas capas
de cables y acortan su vida útil.
Si es posible, seguir el recorrido del cable, buscando los
puntos del equipo que aparezcan gastados o cortados por el
cable en su movimiento. La colocación de protectores o
rodillos en esos puntos disminuirá el desgaste abrasivo.
77. Tipos de Grúas
• Móvil (sobre ruedas)
• Hidráulica
• Elevada sobre rieles (overhead crane)
• De pórtico (gantry crane)
• En torre (tower crane)
78. Tipos de Grúas
1. Clasificación de las grúas según sea la
base sobre la que va montada
2. Clasificación de las grúas según su
estructura
3. Clasificación de las grúas según los tipos de
plumas
79. GRUAS MOVILES
Criterios de clasificación :
1. Clasificación de las grúas según sea la base
sobre la que va montada:
a) Montada sobre ruedas: aquella cuya base
está equipada de ruedas para su
desplazamiento, que puede ser de
desplazamiento rápido, todo-terreno o mixta
(desplazamiento rápido todo-terreno).
80. GRUAS MOVILES
Criterios de clasificación :
b) Montada sobre cadenas: aquella cuya base
está equipada de cadenas para su
desplazamiento.
c) Montada sobre bases especiales: aquella
cuya base está equipada para su
desplazamiento de otros distintos de ruedas o
cadenas.
81. 2. Clasificación de las grúas según su
estructura:
a) De estructura giratoria: aquella cuya
estructura superior completa, incluida pluma
y equipo de mando, gira sobre su base.
b) De pluma giratoria: aquella cuya
estructura superior, incluida la pluma, sin
equipo de mando, gira sobre su base.
GRUAS MOVILES
82. 2. Clasificación de las grúas según su
estructura:
c) De pluma fija: aquella cuya estructura
superior, incluida la pluma, es fija respecto a
su base.
d) Grúa articulada: aquella cuya estructura
superior, incluida la pluma, es fija respecto a
una base articulada.
GRUAS MOVILES
83. 3. Clasificación de las grúas según los tipos de
plumas:
a) Pluma de longitud fija: pluma de longitud
de funcionamiento fija que puede variarse
con la incorporación o eliminación de
elementos, pero no puede modificarse
durante el ciclo de trabajo.
b) Pluma de celosía: pluma de longitud fija de
estructura de tipo de celosía.
GRUAS MOVILES
84. 3. Clasificación de las grúas según los tipos de
plumas:
c) Pluma telescópica: formada por varias
secciones que permiten variar su longitud por
un procedimiento telescópico.
d) Pluma sobre mástil: montaje compuesto
de una pluma dispuesta en, o cerca de, la
cabeza de un mástil vertical o casi vertical.
GRUAS MOVILES
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121. Gruas moviles autopropulsadadas
• Las grúas móviles autopropulsadas son
«aparatos de elevación de funcionamiento
discontinuo destinados a elevar y distribuir en
el espacio cargas suspendidas de un gancho o
cualquier otro accesorio de aprehensión
dotado de medios de propulsión y conducción
propios o que formen parte de un conjunto
con dichos medios que posibilitan su
desplazamiento por vías públicas o terrenos».
122. Por lo general, las grúas autopropulsadas
pueden dividirse en tres partes principales:
– Estructura giratoria.
– Corona de orientación.
– Chasis o base portante de la grúa.
La estructura giratoria es la encargada de
soportar la pluma, los contrapesos y todos los
mecanismos de accionamiento de la grúa.
Gruas moviles autopropulsadadas
123. Principales componentes:
– La Pluma (de celosía, telescópica o sobre mástil).
Encargada de soportar el órgano de aprehensión
cargado (gancho, electroimán…), asegurando el
alcance, radio y altura de elevación solicitados.
– Plumines (fijos o abatibles). Elementos que se
añaden a la pluma para permitir mayor alcance y
aumentar la longitud de ésta.
– Órgano de aprehensión. Dispositivo (gancho,
cuchara, electroimán...) que sirve para suspender,
coger o soportar la carga.
Gruas moviles autopropulsadadas
124. Gruas moviles autopropulsadadas
– Aparejo. Sistema de poleas y cables
destinado a hacer varias las fuerzas y
velocidades.
– Mecanismo de elevación (cabestrante).
Es el conjunto de tambor y cables que
permiten el movimiento de elevación.
– Contrapesos. Masas fijadas sobre la
estructura y encargadas de equilibrar las
acciones de la carga.
125. Gruas moviles autopropulsadadas
– Cabina del gruísta. Habitáculo destinado
al manejo o conducción de la grúa.
La corona de orientación está compuesta
por elementos y engranajes destinados a
transmitir los esfuerzos de la estructura
giratoria a la base de la grúa y es
accionada por el mecanismo de
orientación de la estructura giratoria.
126. Gruas moviles autopropulsadadas
El chasis o base portante de la grúa es el
dispositivo capaz de soportar toda la
estructura de la grúa. Dispone de sistemas
propios de propulsión.
Principales sistemas de seguridad
de una grúa: indicadores de longitud y
ángulo de pluma, de radio y de carga
127. Gruas moviles autopropulsadadas
– Indicador de longitud de pluma.
Permite la lectura, desde la cabina del
operador, de la longitud de pluma en cada
momento para aquellas grúas equipadas con
pluma telescópica.
– Indicador del ángulo de pluma.
Posibilita la lectura, desde la cabina del
operador, del ángulo de inclinación de la
pluma en cada momento respecto de la
horizontal.
128. Gruas moviles autopropulsadadas
– Indicador de radio o alcance.
Permite la lectura, desde la cabina del
conductor, del radio con el que se está
trabajando en cada momento.
– Válvulas de retención. Evitan
movimientos incontrolados (de
elevación, inclinación...) de la pluma en
caso de rotura o avería en las tuberías
flexibles de conexión.
129. Gruas moviles autopropulsadadas
– Indicador de carga en gancho.
Permite la lectura, desde la cabina del
operador, de la carga que soporta el
órgano de aprehensión en cada
momento.
– Indicador de momento de carga.
Detecta para cada posición de trabajo la
carga máxima que se puede manipular.
130. Gruas moviles autopropulsadadas
– Limitador de cargas. Detecta para cada
posición de trabajo la carga máxima que
se puede manipular, cortando el
movimiento ascendente del mecanismo
de elevación y aquellos movimientos
que supongan aumentar los máximos
momentos de carga prefijados en el
correspondiente diagrama de cargas.
131. Gruas moviles autopropulsadadas
– Final de carrera de elevación del órgano
de aprehensión. Impide que el órgano de
aprehensión se halle muy próximo a la
cabeza de la pluma o plumín.
– Pestillo de seguridad. Incorporado a los
ganchos para evitar que los cables,
estrobos o eslingas se salgan de ellos.
Actúan bien por resorte o por
contrapeso.
132. Gruas moviles autopropulsadadas
– Parada de emergencia. Produce la
desconexión del motor y el mando
eléctrico.
– Anemómetro. Mide la velocidad del
viento, ya que al sobrepasar la velocidad
predeterminada para cada tipo de grúa
produce una señal intermitente acústica
y visual de aviso, pero no la
desconexión de los movimientos de la
grúa.
133. Gruas moviles autopropulsadadas
– Interruptor fin de carrera del cabestrante.
Desconecta el movimiento de bajar
gancho cuando quedan tres vueltas en el
tambor del cable.
– «Hombre muerto». Hace que los mandos
vuelvan a su posición neutra cuando se
deja de actuar sobre éstos.
134. Gruas moviles autopropulsadadas
– Captador de ocupación del asiento del
operador. Impide que se active por error
cualquier dispositivo de la grúa.
135. Gruas moviles autopropulsadadas
Planificacion del Trabajo
a) Posee toda la información necesaria
para realizar sin riesgos su trabajo (radio de
trabajo, peso de la carga, altura de elevación,
posibles obstáculos…).
b) La grúa posee la correspondiente
documentación y esta se encuentra en vigor.
c) Cuente con un manual de instrucciones junto
a las tablas de carga del aparato.
136. Gruas moviles autopropulsadadas
d) Asimismo deberá llevar consigo el pertinente
equipo de protección individual (casco, botas,
guantes, gafas de seguridad…).
e) Por último, el profesional realizará un análisis
exhaustivo de la grúa móvil autopropulsada,
análisis que irá desde la revisión de aceite,
agua y niveles de presión hasta la
comprobación individual de las partes que
componen el aparato.
137. Gruas moviles autopropulsadadas
f) A la hora de elegir un adecuado
emplazamiento deben tenerse en cuenta
dos factores:
Condiciones del terreno y la No
existencia de obstáculos en el radio y en
la altura de trabajo.
138. LLEGADA AL LUGAR DE TRABAJO.
MONTAJE DE LA GRÚA
Analizado el perfecto funcionamiento de la
grúa, el gruista deberá desplazarse hasta el
lugar fijado para la realización del trabajo
siguiendo la normativa de circulación vigente.
Una vez allí se procederá al montaje de la
máquina, para lo cual se seguirán
estrictamente las instrucciones del fabricante
y se balizará la zona de trabajo para impedir el
acceso de personas ajenas a la dirección de la
obra.
139. LLEGADA AL LUGAR DE TRABAJO.
MONTAJE DE LA GRÚA
A la hora de elegir un adecuado
emplazamiento deben tenerse en cuenta
dos factores: condiciones del terreno y
la no existencia de obstáculos en el
radio y altura de trabajo.
140. LLEGADA AL LUGAR DE TRABAJO.
MONTAJE DE LA GRÚA
Con respecto al primero, antes de proceder al
montaje de la grúa móvil se inspeccionará con
detalle el terreno de manera que la resistencia
del suelo sea la apropiada para aguantar la
presión. En este sentido es conveniente
comprobar que el lugar elegido para situar la
grúa no contenga conducciones subterráneas
(tuberías, conducciones de gas…) y que se
encuentre alejado de excavaciones, fosos o
taludes, así como de aquellos en los que se
han realizado movimientos de tierra.
141. LLEGADA AL LUGAR DE TRABAJO.
MONTAJE DE LA GRÚA
La distancia de seguridad a taludes y
fosos se mide a partir de la profundidad
de los mismos.
a) Terreno blando o terraplenado:
dos veces la profundidad del foso o talud
(B2 = 2×h).
b) Terreno duro o natural: la distancia
debe ser como mínimo igual a la
altura del foso o talud (B1 = 1×h).
142. LLEGADA AL LUGAR DE TRABAJO.
MONTAJE DE LA GRÚA
En cuanto al segundo, se deben tomar los radios y
alturas de trabajo menores posibles, siguiendo las
tablas de carga aportadas por el fabricante,
evitando desobedecer las indicaciones que en ellas
nos encontramos, ya que pueden suponer un serio
peligro para los trabajadores, como así obedecen
las estadísticas.
143. PASOS PARA LA ESTABILIZACION DE LA GRÚA
La estabilización de la grúa se realiza
mediante los estabilizadores, cuya
finalidad es aumentar el polígono de
sustentación de la grúa y, por tanto, su
estabilidad y su momento resistente al
vuelco.
144. PASOS PARA LA ESTABILIZACION DE LA GRÚA
Deberemos cerciorarnos de que no existe ninguna
persona u objeto que pueda correr un riesgo o
interrumpir el proceso de estabilización. Una vez
comprobado se procederá a:
– Extender totalmente los largueros corredizos y, en
caso de no ser posible, se extenderán teniendo en
cuenta las indicaciones del fabricante respecto a la
pérdida de capacidad de carga.
– No olvidar embulonarlos, ya que, en caso contrario, se
produciría un desajuste de la superficie de apoyo.
145. PASOS PARA LA ESTABILIZACION DE LA GRÚA
– Extender los cilindros de apoyo (gatos)
hasta que las ruedas ya no tengan
contacto con el suelo.
– No olvidar fijar las placas de apoyo con
sus correspondientes horquillas, ya que
si no podrían salirse y no volver a
realojarse en su posición original.
146. PASOS PARA LA ESTABILIZACION DE LA GRÚA
– Si el terreno es blando o inestable se usarán
placas de reparto (calzos) para ampliar la
superficie de apoyo y disminuir así la presión
transmitida al suelo. Éste ha de ser rígido,
firme y de una superficie de al menos tres
veces la del plato (traviesas de ferrocarril,
placas de teflón o acero...).
– El plato debe apoyar toda su superficie dentro
del calzo. Éste debe estar bien nivelado,
garantizando un ángulo de 90° entre la pata del
cilindro de apoyo y su plato.
147. PASOS PARA LA ESTABILIZACION DE LA GRÚA
– Nunca calzar bajo los largueros corredizos, ya
que esto acercaría el eje de vuelco al centro de
gravedad de la grúa, con el consiguiente
peligro de vuelco de la grúa.
– Cuando sea necesario un calzo alto, se
cruzarán ordenadamente los tablones de cada
capa sobre la anterior.
Por último, nos cercioraremos de la correcta
nivelación de la grúa.
149. PASOS PARA LA ESTABILIZACION DE LA GRÚA
En el proceso de montaje de la grúa es posible
encontrar una situación determinada, el montaje del
plumín (punta rebatible) y que, de no ser
correctamente colocada, puede provocar accidentes
de gravedad. Se deberán seguir las normas de
seguridad que recoge el fabricante, pero en especial:
– Se usará arnés de seguridad (para alturas superiores
a dos metros), que se enganchará en la estructura de
la grúa, además del medio auxiliar adecuado
(escalera manual, andamio, plataforma elevadora...).
150. PASOS PARA LA ESTABILIZACION DE LA GRÚA
– Retraer completamente la pluma
telescópica y colocarla en posición 0º.
– Asegurar siempre todos los bulones
mediante sus correspondientes seguros
o clips de seguridad.
– Usar un cable o cuerda apropiados para
evitar el giro involuntario del plumín
durante su montaje.
151. PASOS PARA LA ESTABILIZACION DE LA GRÚA
– No se deben encontrar personas u
obstáculos en la zona de movimiento del
plumín.
– Nunca dejar completamente suelto
(desembulonado) el plumín durante su
montaje/desmontaje. Podría caer al
suelo y provocar un accidente grave.
152. COMENZAR A TRABAJAR
El primer paso a realizar tras estabilizar y
nivelar correctamente nuestra grúa móvil
autopropulsada será el de designar, si es
necesario y las condiciones de visibilidad lo
requieren, a un encargado de señales, la única
persona a la que el gruista deberá obedecer.
Dicha persona estará perfectamente
identificada mediante brazalete reflectante y
deberá poseer la formación adecuada.
153. COMENZAR A TRABAJAR
Las órdenes serán emitidas mediante un
código de ademanes que deberán
conocer perfectamente tanto el
encargado de maniobra como el gruista.
155. COMENZAR A TRABAJAR
El ascenso y
descenso a la grúa se
hará por los lugares
habilitados (peldaños
y asideros),
utilizando ambas
manos y mirando
hacia la grúa, pero
nunca saltando.
156. COMENZAR A TRABAJAR
A continuación, el profesional deberá
prestar especial atención a dos de las
maniobras más importantes en una grúa
autopropulsada: el izado y la descarga,
que requieren normas específicas de
seguridad.
157. COMENZAR A TRABAJAR
Las normas a seguir para el izado son:
1. Es esencial evitar el paso de cargas sobre
personas o vehículos, acotando la zona de
radio de acción de la grúa o, en caso de ser
esto inevitable, emitiendo señales de aviso
previamente establecidas y conocidas por el
personal.
2. Se prohibirá el transporte de personas
colgadas del gancho o encaramadas sobre la
carga.
3. No dejar que nadie se suba a la grúa.
158. COMENZAR A TRABAJAR
4. No operar con la grúa cuando la escasa
visibilidad haga que la operación resulte
peligrosa y extremar la precaución ante
condiciones climáticas adversas.
5. Seguir las indicaciones del fabricante en
cuanto a la velocidad del viento
permitida para operar con la grúa.
6. Verificar que la carga está amarrada y
sujeta al gancho.
159. COMENZAR A TRABAJAR
7. Nunca abandonar la grúa con una carga
suspendida. Si fuese necesario salir de la
grúa, se bajará la carga al suelo y se detendrá
el motor antes de salir de la cabina.
8. Nunca manejar la grúa desde otra posición
que no sea el asiento del conductor (por
ejemplo, asomándose por la ventanilla).
9. A ser posible, siempre se ha de mover la carga
muy cerca del suelo.
160. COMENZAR A TRABAJAR
10. Evitar oscilaciones pendulares, ya que
cuando la masa de la carga es grande pueden
adquirir amplitudes que pondrían en peligro la
estabilidad de la máquina.
11. Nunca tirar de lado con la pluma (tiro
oblicuo). Esto produciría un esfuerzo lateral,
reduciéndose la capacidad de la pluma. Los
esfuerzos laterales son unas de las principales
causas de quiebro de la pluma por fallo
estructural.
12. No intentar izar cargas ancladas al terreno,
ya que podría provocar el vuelco de la grúa.
161. COMENZAR A TRABAJAR
13. No levantar postes, pilotes o artículos
sumergidos que puedan tener una gran
acumulación de barro, sedimentos, arena...
14. Si la carga a elevar comprende piezas
sueltas, hay que fijarlas de
manera que no puedan caer al suelo. No izar
materiales de distinta naturaleza ni izar varias
cargas al mismo tiempo.
15. Durante el izado de la carga se evitará que el
gancho alcance la mínima distancia admisible
por el fin de carrera con objeto de no originar
un desgaste prematuro de los contactos.
162. COMENZAR A TRABAJAR
16. Las maniobras deberán comenzar muy
lentamente, tensando los cables antes de
comenzar la elevación.
17. No se deberá, en ningún caso, superar la
carga máxima de la grúa ni la extensión
máxima de la pluma en función de dicha carga
(comprobar las tablas de carga).
18. Se aconseja el uso de cable guiador para la
carga, lo que evitará movimientos
involuntarios de la carga y, por consiguiente,
posibles daños.
163. COMENZAR A TRABAJAR
La maniobra de descarga requiere, por su
parte, las siguientes normas de seguridad:
1. Al depositar la pieza no se dejarán los útiles
de izado sin tensión hasta asegurarnos de la
total estabilidad de la pieza.
2. Nunca se descenderá la carga a velocidad
excesiva ni se realizarán paradas bruscas
durante el descenso. Esto podría provocar el
vuelco de la grúa.
3. Al terminar la maniobra se reunirán todos los
útiles de izado, se limpiarán y se depositarán
en su lugar correspondiente.
164. DESMONTAJE DE LA GRÚA
1. Retraer la pluma y colocarla en posición cero
grados.
2. En caso de desmontaje del plumín, se usará
arnés de seguridad, cables y cuerdas guías de
seguridad para evitar los giros involuntarios
del plumín; se evitará la presencia de personas
u obstáculos en el radio de giro del mismo y
se seguirán todos los pasos recogidos en el
manual del fabricante.
3. Se recogerán los estabilizadores
individualmente y se embulonarán y
asegurarán correctamente.
165. DESMONTAJE DE LA GRÚA
Controles a efectuar antes de abandonar el
lugar de trabajo (despiece o cuadro
informativo):
– En la cabina del gruísta:
• El conjunto giratorio con el chasis está
bloqueado.
• El indicador de dirección de marcha se
encuentra en posición neutra.
• El freno de estacionamiento está bloqueado.
• Las puertas y ventanas están cerradas.
166. DESMONTAJE DE LA GRÚA
– En la cabina del conductor:
• El bloqueo de la suspensión de ejes está
desconectado.
– En la grúa:
• Los cilindros de apoyo están retraídos completamente.
• Las placas de apoyo están en posición de transporte y
aseguradas.
• Los largueros corredizos están retraídos
completamente y asegurados.
• Los bulones están asegurados (estén o no en uso).
• Las escaleras (si las tuviese) para el montaje se han
asegurado.
167. DESMONTAJE DE LA GRÚA
• Los calzos, placas de reparto... están
asegurados en sus soportes.
• La pluma telescópica se encuentra
completamente retraída y depositada.
• Las cajas de mando de ambos lados de la grúa
están aseguradas.
• El cable de elevación se encuentra recogido y
el gancho anclado de forma segura al perno de
acoplamiento de maniobra.
168. DESMONTAJE DE LA GRÚA
Controles a efectuar después de la jornada de
trabajo (despiece o cuadro informativo):
– Al abandonar la grúa móvil, el conductor debe
inmovilizar el vehículo, de tal manera que le
sea imposible ponerla en funcionamiento a
una persona no autorizada.
– Las puertas y ventanas quedarán bien
cerradas.
169. DESMONTAJE DE LA GRÚA
– Se limpiarán y secarán todas las
manchas o restos de aceite o carburante
sobre la grúa móvil, evitando que el
material usado para tal fin se conserve
sobre la grúa (peligro de incendio,
caídas…).
– Impedir que la grúa quede colocada ante
pasos o escaleras de muelles, bocas de
incendio..., ya que impediría la
utilización de los mismos.
170. DESMONTAJE DE LA GRÚA
– Si se para en pendiente con rampa,
después de bloquear el freno de
mano, las ruedas o cadenas quedarán
fijadas por medio de calzos.
– Nunca olvidar quitar el desconectador
de batería.
171. TRABAJO CON CESTAS O CANASTILLAS
PREVENCION EN EL ENTORNO
– Ubicar la grúa en superficies en
buen estado y horizontales para evitar
la inestabilidad.
– Evitar el paso de personas bajo la
cesta y los movimientos de materiales
y personas en niveles superiores a la
zona de operación de la misma.
172. TRABAJO CON CESTAS O CANASTILLAS
PREVENCION EN EL EQUIPO
– Debe poseer una chapa identificativa con sus
características técnicas.
– Poseerá señalización de uso obligatorio de cinturón de
seguridad y de prohibición de subir pesos superiores
a los permitidos.
– Se instalarán anclajes o argollas fijas en la cabeza de
la grúa (en un punto distinto de la cesta e
independiente del cable de suspensión de la misma) o
se colocará un estrobo adicional en la cabeza de la
grúa para la sujeción del cinturón de seguridad del
usuario
173. TRABAJO CON CESTAS O CANASTILLAS
PREVENCION EN EL EQUIPO
– Proteger contra la corrosión los elementos metálicos
de la cesta expuestos a la intemperie.
– Se recomienda la instalación de bandejas portaobjetos
o armarios para poder depositar herramientas y útiles
de trabajo.
– La cesta llevará doble barandilla para evitar posibles
atrapamientos.
– La cesta se podrá manejar desde el suelo con una
cuerda para controlar su estabilidad y
horizontabilidad.
174. TRABAJO CON CESTAS O CANASTILLAS
CONDICIONES DE MANTENIMIENTO
– Antes de su puesta en servicio se
realizará una revisión y ensayo así como
de los cables y accesorios de elevación.
– Después de su uso se revisará y limpiará.
175. TRABAJO CON CESTAS O CANASTILLAS
PREVENCION EN EL USO: MANIPULACIONDE LA
CESTA
– No se usarán en condiciones climatológicas adversas.
– No se trasladará horizontalmente la cesta con
personas en su interior.
– El grupo de trabajo estará compuesto, como mínimo,
de gruista y usuario de la cesta, los cuales emplearán
medios seguros para comunicarse. Las señales
usadas para la comunicación serán conocidas
previamente por todos los implicados.
176. TRABAJO CON CESTAS O CANASTILLAS
PREVENCION EN EL USO: MANIPULACIONDE
LA CESTA
– El gruista nunca abandonará su puesto de
trabajo mientras haya alguien en el interior de
la cesta y deberá tener las palancas de mando
en posición neutra.
– No se desplazará la grúa con personas en el
interior de la cesta.
– Nunca se trabajará en las proximidades de
líneas eléctricas, salvo que se haya cortado la
corriente y previa comunicación por escrito.
177. TRABAJO CON CESTAS O CANASTILLAS
PREVENCION EN EL USO: MANIPULACION
DE LA CESTA
– Comprobar diariamente el correcto
funcionamiento de los limitadores de la grúa.
– No se acumularán materiales pesados en la
cesta.
178. TRABAJO CON CESTAS O CANASTILLAS
PREVENCION EN EL USO: INSTRUCCIONES
PARA EL USUARIO
– Deberá garantizar que se encuentra apto para
el trabajo a desempeñar.
– Deberá conocer exactamente las normas de
seguridad concernientes al manejo de cestas
con grúa.
– Será necesaria la utilización de los EPP´s por
parte de la persona que esté en la cesta.
179. TRABAJO CON CESTAS O CANASTILLAS
PREVENCION EN EL USO: INSTRUCCIONES
PARA EL USUARIO
– Las herramientas que vayan en la cesta
deberán ir convenientemente sujetas.
– Para acceder y salir de la cesta ésta deberá
estar apoyada en el suelo.
– El usuario debe apoyar siempre sus dos pies
sobre la superficie de la cesta, y en ningún
caso se asomará o inclinará parte de su cuerpo
fuera de los límites de la misma.
180. TRABAJO CON CESTAS O CANASTILLAS
PREVENCION EN EL USO: INSTRUCCIONES
PARA EL USUARIO
– Queda totalmente prohibido el trabajo desde
pasamanos, tablones o cualquier otro punto
distinto del suelo de la cesta.
– El usuario empleará cinturón de seguridad con
arnés anclado a los elementos previstos.
– No se usará la cesta para subir o bajar
materiales.
181. TRABAJO CON CESTAS O CANASTILLAS
PREVENCION EN EL USO: INSTRUCCIONES
PARA EL USUARIO
– Para trabajos en proximidad de líneas
eléctricas aéreas, se cortará la corriente antes
del inicio de los trabajos, y si esto no es
posible, se emplearán protecciones
individuales y medios aislantes.
182. OPERACIONES CON MAS GRUAS
Las maniobras con más de una grúa son de gran
complejidad y deben estar perfectamente
estudiadas y planificadas, así como dirigidas por
personal competente y con la formación y
experiencia adecuadas:
– Las condiciones del suelo deben ser estables,
manteniéndolo compactado y nivelado.
183. OPERACIONES CON MAS GRUAS
– El peso a elevar por cada grúa debe estar
perfectamente definido y ajustarse a lo indicado en las
tablas de carga. Por ello, las labores de amarre se
convierten en un punto clave del proceso.
– Todos los movimientos deben ser lentos y
controlados y se deberá conocer con la mayor
exactitud posible el peso a elevar, la longitud del
mayor radio, las longitudes de pluma y los ángulos de
pluma.
184. OPERACIONES CON MAS GRUAS
– Los encargados de las labores de señalización y los
operadores de la grúa deberán conocer exactamente
de antemano qué deben hacer y los movimientos a
realizar.
– El director de la maniobra debe tener una perfecta
visibilidad de la maniobra y se comunicará con los
operadores mediante intercomunicadores.
– Durante toda la maniobra, la línea definida por el
gancho, la cabeza de la pluma y el centro de gravedad
de la carga deberá estar siempre vertical con respecto
al suelo.
186. Resguardo de Partes Móviles
Engranaje
de la
Cadena sin
Resguardar
Reguarde todas las partes móviles tales como
engranajes, poleas, cadenas, y correas.
187. Manténgase alejado del radio de giro de la grúa.
Asegúrese que haya barricadas/barreras marcando la zona
del radio de giro.
Radio de Giro
188. Visibilidad para el Operador
Vidrio Roto
Asegúrese que ventanas rotas u otras
obstrucciones no impidan al operador de ver
claramente.
192. Indicador del Angulo del Brazo
(o Pescante) de la Grúa
El Indicador del Angulo del Brazo
(o Pescante) de la Grúa debe Permanecer en la Grúa.
193. Superficie de Apoyo
Las grúas deben estar sobre superficies de
apoyo firmes y niveladas dentro del 1 por ciento.
194. Las ranuras deben estar lisas y libres de defectos en
la superficie que pueden dañar el cable de acero.
Poleas
195. Equipo de Levantamento.
Eslingas.
Los tipos de eslingas incluyen: cadena de aleación de
acero, cable de acero, malla tejida de acero, soga o
cuerda natural o sintética, y malla tejida sintética.
Cadena Cable de
Acero
Malla
Metálica
Sintética
200. INSPECCIONES
Periodicidad. Las grúas objeto de esta ITC
serán inspeccionadas periódicamente con los
plazos indicados a continuación:
• a) Grúas hasta seis años de antigüedad: Cada
tres años.
• b) Grúas entre seis y diez años de antigüedad:
Cada dos años.
• c) Grúas de más de diez años de antigüedad:
Cada año.
202. SEGURIDAD
Riesgos en la Operación de Grúas Móviles
1.- Vuelco de la Grúa.- puede producirse por nivelación
defectuosa de la misma, por fallo del terreno donde se
asienta, por sobrepasarse el máximo momento de carga
admisible o por efecto del viento.
2.- Caida de la Carga.- por fallo en el circuito hidráulico,
frenos, etc. Por choque de las cargas o del extremo de
la pluma contra un obstáculo, por rotura de cables o de
otros elementos auxiliares (ganchos, poleas, etc.) y por
enganche de eslingas inadecuado
203. SEGURIDAD
3.- Golpes contra Objetos o Estructuras.- producidos
por la carga durante la maniobra o por rotura de
cables en tensión.
4.- Contacto eléctrico.- es muy común que las grúas
toquen accidentalmente líneas de alta tensión
eléctrica
204. SISTEMAS DE SEGURIDAD
• Limitador del Momento de Carga.- dispositivo
automático de seguridad para grúas telescópicas de
todo tipo, que previene contra los riesgos de
sobrecarga o de vuelco por sobrepasarse el máximo
momento de carga admisible. La finalidad de este
dispositivo es impedir que se sobrepase la “curva de
carga a seguir” indicada por el fabricante.
Generalmente actua emitiendo una señal de alarma,
luminos o sonora, cuando el momento llega a ser el
75 % del maximo admisible y bloqueando los
circuitos hidraulicos al alcanzarse el 85 % del valor
de aquel.
205. SEGURIDAD
• Limitador de final de carrera del gancho.-
dispositivo electrónico que corta automáticamente el
suministro de fuerza cuando el gancho se encuentra
a la distancia mínima admisible del extremo de la
pluma.
• Pestillo de Seguridad.- dispositivo incorporado a
los ganchos para evitar que los cables, estrobos o
eslingas que soportan la carga puedan salirse
206. SEGURIDAD
Riesgo de Vuelco
Esta siempre presente en las
grúas, siendo uno de los
factores mas importantes la
horizontalidad de los apoyos.
Pequeños ángulos implican
distancias grandes en las
plumas (Fig. 5)
207. SEGURIDAD
Es por ello que ante este riesgo debe procederse a
comprobar si el terreno tiene consistencia suficiente
para que los apoyos (orugas, ruedas o
estabilizadores) no se hundan en el mismo durante
la ejecución de las maniobras.
208. SEGURIDAD
El emplazamiento de las maquinas se efectuara
evitando las irregularidades del terreno y poniendo
planchones si fuera necesario, a fin de conseguir
que la grúa quede perfectamente nivelada. Esta
nivelación que deberá ser verificada antes de
iniciarse los trabajos que serán detenidos de forma
inmediata si durante su ejecución se observa el
hundimiento de algún apoyo.
209. SEGURIDAD
Si la transmisión de la
carga se realiza a través
de estabilizadores y el
terreno es de constitución
arcillosa o no ofrece
garantías, es preferible
ampliar el reparto de
cargas sobre el mismo
aumentando la superficie
de apoyo mediante bases
constituidas por tablones.
210. SEGURIDAD
Al trabajar con grúa sobre ruedas transmitiendo los
esfuerzos al terreno a través de los neumáticos, se
tendrá presente que en estas condiciones se
recomienda mayor presión de inflado que la que tienen
circulando.
211. SEGURIDAD
Así mismo en casos de transmisión de cargas a través
de neumáticos, la suspensión del vehículo portante
debe ser bloqueada con el objeto de que, al mantenerse
rígida, se conserve la horizontalidad de la plataforma
base en cualquier posición que adopte la flecha y para
evitar movimientos imprevistos de aquel, además de
mantenerse en servicio y bloqueado con el freno de
mano, se calzaran las ruedas de forma adecuada.
212. PROCEDIMIENTOS PREVIOS A LA
OPERACION
• Nunca usar una grúa si no esta en perfectas
condiciones mecánicas
• Evaluar su estado antes de comenzar las
operaciones.
• Considerar la velocidad del viento.
• Nunca comience el trabajo solo.
•Conozca la localización de todos los servicios,
tuberías, etc.
213. PROCEDIMIENTOS PREVIOS A LA
OPERACION
• Asegurarse que nadie este en el radio de rotación de
la maquina.
• Extender totalmente los apoyos, si no es posible
dejar constancia.
• Determine el peso de las cargas antes de eslingar e
intentar levantarlas.
214. FACTORES QUE AFECTAN LA
CAPACIDAD DE LA GRUA
• Estudiar la capacidad de carga de la grúa,
mediante su tabla o diagrama de carga.
• También se debe ser capaz de reconocer los
factores que disminuyen la capacidad puesta en la
tabla.
• La capacidad de la grúa esta influenciada según
se trabaje en el frente, en el costado o hacia atrás.
• La grúa debe estar perfectamente nivelada.
215. FACTORES QUE AFECTAN LA
CAPACIDAD DE LA GRUA
•Tener cuidado con la
resistencia del terreno.
• El alcance varia
según la maquina este
o no cargada.
•Evitar las cargas
laterales y los giros
rápidos (Ver Fig. 9)
216. LINGADO DE LA CARGA
• Conocer el peso de la carga y la capacidad de la
eslinga.
• No usar eslingas o ganchos deteriorados.
• Evitar excesivo doblado de las eslingas.
• Asegurarse que el ángulo de la eslinga es mayor
que 45º.
• Lo importante no es el numero de eslingas sino el
peso que soporta aquella mas cargada.
217. MANIPULEO DE LA CARGA
• La carga no debe
tener objetos que se
puedan caer.
• Usar una cuerda guía
(Ver Fig 10)
• Chequear el centro de
gravedad
218. MANIPULEO DE LA CARGA
• Evitar el izado brusco.
• Asegurarse que no haya personal debajo de la
carga.
• Nunca usar una grúa para tirar una carga de
costado.
• La carga debe ser descendida hasta el suelo
antes de ser desenganchada.
219. TABLAS DE CARGA
El 1º de enero de 1986 las Normas ANSI /SAE
establecieron que todas las tablas de carga de las
grúas móviles están basadas en un 75 % y si la
maquina esta equipada con estabilizadores y
trabaja sobre ellos los valores de la tabla no
excederán un 85 %.
ANSI = Instituto Nacional Americano de Normas
SAE = Sociedad de Ingenieros Automotrices
OHSA = Occupational Safety and Health
Administration
220. TABLAS DE CARGA
La clasificación de los cuadros en la mayoría de
grúas tienen una línea pronunciada, área
sombreada, asteriscos, etc. Dentro de la tabla
dividiéndola en dos segmentos.
Esto indica al operador que capacidades están
limitadas por fuerza estructural y cuales por
estabilidad.
En un caso con la grúa sobrecargada algún
componente estructural o mecánico podría fallar y
en el otro caso la grúa se podría volcar.
221. TABLAS DE CARGA
• Radio de Carga.- es la distancia horizontal tomada
desde el centro de rotación de la grúa (tornamesa)
hasta el centro de gravedad de la carga o caída a
plomo del gancho.
• Longitud de pluma.- medida tomada desde el
centro del pasador de la pluma a la superestructura
hasta el centro del pasador que lleva las roldanas
en la cabeza de la pluma, incluyendo extensiones de
pluma, jib, extensiones angulables y todo
habilitamiento diseñado para incrementar la longitud
de la pluma.
222. TABLAS DE CARGA
• Altura.- se mide desde el suelo donde esta
nivelada la grúa hasta el centro del pasador de la
cabeza de la pluma.
• Angulo de la pluma.- es el ángulo formado entre el
plano horizontal de rotación y la línea central de la
pluma.
232. SEGURIDAD- Riesgos detectados
Riesgos específicos
Los que con mayor frecuencia se presentan en los
trabajos realizados con grúas móviles, que
consideramos específicos de esta máquina aunque
también pueden serlo de otras, son los que siguen:
• Vuelco de la máquina
• Precipitación de la carga
• Golpes
• Atrapamientos
• Contacto eléctrico
233. SEGURIDAD- Riesgos detectados
Vuelco de la máquina
Que puede producirse por nivelación defectuosa de
la misma, por fallo del terreno donde se asienta,
por sobrepasarse el máximo momento de carga
admisible o por efecto del viento.
234. SEGURIDAD- Riesgos detectados
Precipitación de la carga
Por fallo en el circuito hidráulico, frenos, etc. por
choque de las cargas o del extremo de la pluma
contra un obstáculo, por rotura de cables o de otros
elementos auxiliares (ganchos, poleas, etc.) y/ por
enganche o estrobado deficientemente realizados.
238. SEGURIDAD-
Riesgos generales.-
A continuación se indican aquellos riesgos que
también son comunes a la mayor parte de equipos e
instalaciones o que se derivan de cualquier otro
proceso productivo.
239. SEGURIDAD
Atrapamientos
Entre mecanismos u órganos en movimiento.
Caídas a dintinto nivel
Durante el estrobado o recepción de la carga
cuando se realizan a diferentes
niveles al que está situada la máquina.
240. SEGURIDAD
Caída a nivel
Durante los desplazamientos requeridos para
realizar el estrobado de las cargas o dirigir la
maniobra al gruista.
Contacto con objetos cortantes o punzantes
Durante la preparación o manejo de cargas.
Caída de objetos
Producido por desplome de las cargas mal
apiladas.
241. SEGURIDAD
Choques
Contra el material mal apilado.
Proyección de partículas
Dado que durante el movimiento de las cargas se
desprenden partículas adheridas a las mismas.
Sobreesfuerzos
Originados por la utilización del esfuerzo muscular
en la preparación de cargas.
Quemaduras
Por contacto con superficies calientes (escape de
gases).
242. SEGURIDAD
Ruido
Dado que el nivel sonoro puede alcanzar 96 dB
en el interior de la cabina de mando.
Intoxicación
Por inhalación de los gases producidos por los
motores de combustión especialmente cuando su
reglaje es defectuoso.
1926 Subpart N – Cranes, Derricks, Hoists, Elevators, and Conveyors
This presentation is designed to assist trainers conducting OSHA 10-hour Construction Industry outreach training for workers. Since workers are the target audience, this presentation emphasizes hazard identification, avoidance, and control – not standards. No attempt has been made to treat the topic exhaustively. It is essential that trainers tailor their presentations to the needs and understanding of their audience.
This presentation is not a substitute for any of the provisions of the Occupational Safety and Health Act of 1970 or for any standards issued by the U.S. Department of Labor. Mention of trade names, commercial products, or organizations does not imply endorsement by the U.S. Department of Labor.
Other standards and references used for this presentation are as follows:
Mobile Hydraulic Crane Standards
- PCSA Standard NO. 2
- Power Crane and Shovel Association
2. USA Standards
- Safety Code for Cranes, Derricks, Hoists, Jacks and Slings
- Crawler, locomotive and truck cranes
- USAS B30.5-1968
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
COMMONLY USED CRANES - primary examples used in this presentation
Hydraulic rough terrain crane
Crawler lattice boom friction crane
Several significant differences between these cranes, primarily in boom hoist and load line controls. The somewhat smooth operation of the boom control adjustments on the hydraulic cranes may falsely suggest that it is simple to operate. The lattice boom friction cranes’ movement in its boom or its adjustment in load position tend to be a little jerky requiring more skill and experience to operate smoothly.
Another difference is their load charts. Due to the fixed boom lengths, the lattice boom friction crane has a more simplified load chart. This requires extensive motion control and anticipation of boom movement to accurately lift or place loads.
The hydraulic crane’s load charts are more extensive making them complicated due to variations in boom length, so more training in multiple charts is required
The differences between these cranes are significant enough to require specific training on each type of crane. Crane operators cannot expect to be totally knowledgeable and proficient in the operation of the many diverse types of cranes available today. They cannot be expected to move from one type of crane to another without adequate education and training on specifics of each piece of equipment.
COMMONLY USED CRANES - primary examples used in this presentation
Hydraulic rough terrain crane
Crawler lattice boom friction crane
Several significant differences between these cranes, primarily in boom hoist and load line controls. The somewhat smooth operation of the boom control adjustments on the hydraulic cranes may falsely suggest that it is simple to operate. The lattice boom friction cranes’ movement in its boom or its adjustment in load position tend to be a little jerky requiring more skill and experience to operate smoothly.
Another difference is their load charts. Due to the fixed boom lengths, the lattice boom friction crane has a more simplified load chart. This requires extensive motion control and anticipation of boom movement to accurately lift or place loads.
The hydraulic crane’s load charts are more extensive making them complicated due to variations in boom length, so more training in multiple charts is required
The differences between these cranes are significant enough to require specific training on each type of crane. Crane operators cannot expect to be totally knowledgeable and proficient in the operation of the many diverse types of cranes available today. They cannot be expected to move from one type of crane to another without adequate education and training on specifics of each piece of equipment.
COMMONLY USED CRANES - primary examples used in this presentation
Hydraulic rough terrain crane
Crawler lattice boom friction crane
Several significant differences between these cranes, primarily in boom hoist and load line controls. The somewhat smooth operation of the boom control adjustments on the hydraulic cranes may falsely suggest that it is simple to operate. The lattice boom friction cranes’ movement in its boom or its adjustment in load position tend to be a little jerky requiring more skill and experience to operate smoothly.
Another difference is their load charts. Due to the fixed boom lengths, the lattice boom friction crane has a more simplified load chart. This requires extensive motion control and anticipation of boom movement to accurately lift or place loads.
The hydraulic crane’s load charts are more extensive making them complicated due to variations in boom length, so more training in multiple charts is required
The differences between these cranes are significant enough to require specific training on each type of crane. Crane operators cannot expect to be totally knowledgeable and proficient in the operation of the many diverse types of cranes available today. They cannot be expected to move from one type of crane to another without adequate education and training on specifics of each piece of equipment.
COMMONLY USED CRANES - primary examples used in this presentation
Hydraulic rough terrain crane
Crawler lattice boom friction crane
Several significant differences between these cranes, primarily in boom hoist and load line controls. The somewhat smooth operation of the boom control adjustments on the hydraulic cranes may falsely suggest that it is simple to operate. The lattice boom friction cranes’ movement in its boom or its adjustment in load position tend to be a little jerky requiring more skill and experience to operate smoothly.
Another difference is their load charts. Due to the fixed boom lengths, the lattice boom friction crane has a more simplified load chart. This requires extensive motion control and anticipation of boom movement to accurately lift or place loads.
The hydraulic crane’s load charts are more extensive making them complicated due to variations in boom length, so more training in multiple charts is required
The differences between these cranes are significant enough to require specific training on each type of crane. Crane operators cannot expect to be totally knowledgeable and proficient in the operation of the many diverse types of cranes available today. They cannot be expected to move from one type of crane to another without adequate education and training on specifics of each piece of equipment.
COMMONLY USED CRANES - primary examples used in this presentation
Hydraulic rough terrain crane
Crawler lattice boom friction crane
Several significant differences between these cranes, primarily in boom hoist and load line controls. The somewhat smooth operation of the boom control adjustments on the hydraulic cranes may falsely suggest that it is simple to operate. The lattice boom friction cranes’ movement in its boom or its adjustment in load position tend to be a little jerky requiring more skill and experience to operate smoothly.
Another difference is their load charts. Due to the fixed boom lengths, the lattice boom friction crane has a more simplified load chart. This requires extensive motion control and anticipation of boom movement to accurately lift or place loads.
The hydraulic crane’s load charts are more extensive making them complicated due to variations in boom length, so more training in multiple charts is required
The differences between these cranes are significant enough to require specific training on each type of crane. Crane operators cannot expect to be totally knowledgeable and proficient in the operation of the many diverse types of cranes available today. They cannot be expected to move from one type of crane to another without adequate education and training on specifics of each piece of equipment.
COMMONLY USED CRANES - primary examples used in this presentation
Hydraulic rough terrain crane
Crawler lattice boom friction crane
Several significant differences between these cranes, primarily in boom hoist and load line controls. The somewhat smooth operation of the boom control adjustments on the hydraulic cranes may falsely suggest that it is simple to operate. The lattice boom friction cranes’ movement in its boom or its adjustment in load position tend to be a little jerky requiring more skill and experience to operate smoothly.
Another difference is their load charts. Due to the fixed boom lengths, the lattice boom friction crane has a more simplified load chart. This requires extensive motion control and anticipation of boom movement to accurately lift or place loads.
The hydraulic crane’s load charts are more extensive making them complicated due to variations in boom length, so more training in multiple charts is required
The differences between these cranes are significant enough to require specific training on each type of crane. Crane operators cannot expect to be totally knowledgeable and proficient in the operation of the many diverse types of cranes available today. They cannot be expected to move from one type of crane to another without adequate education and training on specifics of each piece of equipment.
COMMONLY USED CRANES - primary examples used in this presentation
Hydraulic rough terrain crane
Crawler lattice boom friction crane
Several significant differences between these cranes, primarily in boom hoist and load line controls. The somewhat smooth operation of the boom control adjustments on the hydraulic cranes may falsely suggest that it is simple to operate. The lattice boom friction cranes’ movement in its boom or its adjustment in load position tend to be a little jerky requiring more skill and experience to operate smoothly.
Another difference is their load charts. Due to the fixed boom lengths, the lattice boom friction crane has a more simplified load chart. This requires extensive motion control and anticipation of boom movement to accurately lift or place loads.
The hydraulic crane’s load charts are more extensive making them complicated due to variations in boom length, so more training in multiple charts is required
The differences between these cranes are significant enough to require specific training on each type of crane. Crane operators cannot expect to be totally knowledgeable and proficient in the operation of the many diverse types of cranes available today. They cannot be expected to move from one type of crane to another without adequate education and training on specifics of each piece of equipment.
COMMONLY USED CRANES - primary examples used in this presentation
Hydraulic rough terrain crane
Crawler lattice boom friction crane
Several significant differences between these cranes, primarily in boom hoist and load line controls. The somewhat smooth operation of the boom control adjustments on the hydraulic cranes may falsely suggest that it is simple to operate. The lattice boom friction cranes’ movement in its boom or its adjustment in load position tend to be a little jerky requiring more skill and experience to operate smoothly.
Another difference is their load charts. Due to the fixed boom lengths, the lattice boom friction crane has a more simplified load chart. This requires extensive motion control and anticipation of boom movement to accurately lift or place loads.
The hydraulic crane’s load charts are more extensive making them complicated due to variations in boom length, so more training in multiple charts is required
The differences between these cranes are significant enough to require specific training on each type of crane. Crane operators cannot expect to be totally knowledgeable and proficient in the operation of the many diverse types of cranes available today. They cannot be expected to move from one type of crane to another without adequate education and training on specifics of each piece of equipment.
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
APPLICABLE OSHA STANDARD
1926.550 (a)(4) Hand signals to crane and derrick operators shall be those prescribed by the applicable ANSI standard for the type of crane in use. An illustration of the signals shall be posted at the job site.
These charts are available in other languages.
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
APPLICABLE OSHA STANDARD
1926.550(a)(8)Belts, gears, shafts, pulleys, sprockets, spindles, drums, fly wheels, chains, or other reciprocating, rotating, or other moving parts or equipment shall be guarded if such parts are exposed to contact by employees, or otherwise create a hazard. Guarding shall meet the requirements of the American National Standards Institute B 15.1‑1958 Rev., Safety Code for Mechanical Power Transmission Apparatus.
OSHA determined that the preferred way to protect employees in these situations is to completely barricade the entire swing radius of the equipment and prevent employee access to the area.
1926.550(a)(9)
Accessible areas within the swing radius of the rear of the rotating superstructure of the crane, either permanently or temporarily mounted, shall be barricaded in such a manner as to prevent an employee from being struck or crushed by the crane.
APPLICABLE OSHA STANDARD
1926.550(a)(12) All windows in cabs shall be of safety glass, or equivalent, that introduces no visible distortion that will interfere with the safe operation of the machine.
APPLICABLE OSHA STANDARD
1926.550(a)(13)
Where necessary for rigging or service requirements, a ladder, or steps, shall be provided to give access to a cab roof.
(ii) Guardrails, handholds, and steps shall be provided on cranes for easy access to the car and cab, conforming to American National Standards Institute B30.5.
(iii) Platforms and walkways shall have anti-skid surfaces.
APPLICABLE OSHA STANDARDS
1926.550(a)(13)(ii)
Guardrails, handholds, and steps shall be provided on cranes for easy access to
the car and cab, conforming to American National Standards Institute B30.5.
1926.550(a)(13)(iii)
Platforms and walkways shall have anti-skid surfaces.
Keep the load as close as possible to the ground when picking and carrying a load.
1926.550(a)(19) All employees shall be kept clear of loads about to be lifted and of suspended loads.
APPLICABLE OSHA STANDARD
1926.550(g)(3)(ii)(A) Cranes and derricks with variable angle booms shall be equipped with a boom angle indicator, readily visible to the operator.
The boom angle indicator is an accessory device that measures the angle of the boom base section centerline to horizontal.
Level the crane according to the manufacturer’s specifications.
Extend outrigger beams.
1926.550(g)(3)(i)(D)
The crane shall be uniformly level within one percent of level grade and located on firm footing. Cranes equipped with outriggers shall have them all fully deployed following manufacturer&apos;s specifications, insofar as applicable, when hoisting employees.
Be mindful of asphalt which easily becomes a shifting, soft surface under a concentrated load.
Reference 1926.550(a)(1) Attachments used with cranes shall not exceed the capacity, rating, or scope recommended by the manufacturer.
Reference:ANSI B30.5-1968
5-1.7.4 Sheaves
Sheave grooves shall be smooth and free from surface defects which could cause rope damage. the cross sectional radius at the bottom of the groove should be such as to form a close fitting saddle for the size rope used and the sides of the groove should be tapered outwardly to facilitate entrance of the rope into the groove. Flange corners should be rounded and the rims should run true about the axis of the rotation.
Sheaves carrying ropes which can be momentarily unloaded shall be provided with close fitting guards or other suitable devices to guide the rope back into the groove when the load is applied again
The sheaves in the lower loads block shall be equipped with close-fitting guards that will prevent load from becoming fouled when the block is lying on the ground with ropes loose.
Means should be provided, if necessary, to proven the chafing of the ropes.
All sheave bearings shall be provided with means for lubrication. Permanently lubricated bearings are acceptable.
5-1.7.5 Sheave Sizes
Boom hoisting sheave shall have pitch diameters of not less than 15 times the nominal diameter of the rope used
1926.251(a)(5)
This section applies to slings used in conjunction with other material handling equipment for the movement of material by hoisting.
The types of slings covered are those made from alloy steel chain, wire rope, metal mesh, natural or synthetic fiber rope (conventional three strand construction), and synthetic web (nylon, polyester, and polypropylene).
Slings and rigging are also included in the OSHA 10-hour Construction presentation Material Handling, Storage, Use and Disposal – located on OSHA’s web site.
APPLICABLE OSHA STANDARD
1926.550(a)(7) Wire rope shall be taken out of service when any of the following conditions exist:
In running ropes, six randomly distributed broken wires in one lay or three broken wires in one strand in one lay;
(ii) Wear of one-third the original diameter of outside individual wires. Kinking, crushing, bird caging, or any other damage resulting in distortion of the rope structure;
(iii) Evidence of any heat damage from any cause;
(iv) Reductions from nominal diameter of more than one-sixty-fourth inch for diameters up to and including five-sixteenths inch, one-thirty-second inch for diameters three-eighths inch to and including one-half inch, three-sixty-fourths inch for diameters nine-sixteenths inch to and including three-fourths inch, one-sixteenth inch for diameters seven-eighths inch to 1 1/8 inches inclusive, three-thirty-seconds inch for diameters 1 1/4 to 1 1/2 inches inclusive;
(v) In standing ropes, more than two broken wires in one lay in sections beyond end connections or more than one broken wire at an end connection.
(vi) Wire rope safety factors shall be in accordance with American National Standards Institute B 30.5-1968 or SAE J959-1966.
Reference 1926.550(a)(1) The employer shall comply with the manufacturer&apos;s specifications and limitations applicable to the operation of any and all cranes and derricks. Where manufacturer&apos;s specifications are not available, the limitations assigned to the equipment shall be based on the determinations of a qualified engineer competent in this field and such determinations will be appropriately documented and recorded. Attachments used with cranes shall not exceed the capacity, rating, or scope recommended by the manufacturer.
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads
OTHER DEFINITIONS
Boom angle indicator – An accessory device that measures the angle of boom base section centerline to horizontal
Load – The weight of the object being lifted including:
Load block and hook
Wire rope
Rigging
Boom attachments
Ancillary attachment
Outrigger – Support members attached to the crane’s carrier frame which are used to level the crane
Pendants – Stationary wire ropes used to support the boom
Radius – The horizontal distance from the axis of the rotation of the crane’s superstructure to the center of the suspended load
Superstructure – The rotating frame, gantry and boom or other operating equipment
Counter weight – Weights used for balancing loads and the weight of the crane in providing stability
Deck – The revolving superstructure or turntable bed.
Drum – The spool or cylindrical member around which cables are wound for raising and lowering loads