1. MINISTRY OF EDUCATION
(State Department of Vocational & Technical Training)
KIENI TECHNICAL AND VOCATIONAL COLLEGE
P.O BOX 316 – 10102, KIGANJO, Tel: 0791-917 471;
E-mail: kienitech2019@gmail.com; info@kienitvc.ac.ke
Website: www.kienitvc.ac.ke
SCHEME OF WORK
DEPARTMENT:building and civil engineering LEVEL:Craft Certificate NO OF TRAINEE”
TRAINER NAME :Patrick Macharia CLASS:CPL DATE OF PREPARATION:
SUBJECT: plumbing theory. TERM:2:YEAR 2 DATE OF REVISION:
Wk Hours topic Objectives Key Points Application/Activities Ref. & Aids Remarks Date
Taught
1 1&2 Reporting and registration of student
Terms date Reporting
week for
student
2 2
pipework
By the end of the lesson the learner
should be able to:
i. Sketch common joints used
in water mains.
ii. Sketch common joints used
in drainage pipes
iii. Describe common materials
used drainage pipes.
joints used in water mains.
Viking johnson
Flange joint
Screwed gland joints
Caulked joints
Types of joints for drainage
pipes
Rubber’0’ ring joint.
Solvent cement
Caulked joints
Materials used in drainage
systems.
Cast iron
Pitch fibre
Asbestos cement
-Learners to:
-Take short notes
Assignment
Sketch common
joints used in
drainage pipes
Describe common
materials used
drainage pipes.
-Motivate
plumbing
practice by c.j
blower.
-handouts
2. 3,4 8
Cold
water
2
(pumps)
By the end of the lesson the learner
should be able to;
i. Describe the working
principles of common pumps
used in water supply
ii. State factors to consider
when selecting pumps
iii. Describe variuos component
associated with pumping
iv. Illustrate the layout of types
of systems used in cold water
supply for high rise buildings
v. Describe the principle of
operation of a pneumatic
vessel
vi. Decribe the operation of
various control devices
vii. Define types of pressure
viii. Calculate pressure in a given
pipe installation
ix. State effects of water
hammers in pipework
Common water supply pumps
Centrifugal
Rotary
Reciprocating/displacement
Hand pumps
Hydraulic ram.
Pumps selections factors
Delivery head
Quantity
Methods of driving pump
Power rating of the pumps
Nature of water
Suction head
Pumps component
Suction valves
Foot valves/strainer
Non-return valves
Priming devices
Float and pressure switches
High rise cold water supply systems
Unboosted systems
Direct pumping
Indirect pumping
Zoned systems
Boosted system
Principles of operations of a pneumatics vessel
Air compressor
Pressure switch
Floats switch
Pressure guage
Safety valves
Sight glass.
Control devices.
Delayed actions ball valve
Electrode and floats switches
Pipeline switch.
Types of pressure.
Intensity of pressure
Atmospheric pressure
guage pressure
absolute pressure.
Calculation of pressure
Intensity of pressure
Atmospheric pressure
guage pressure
absolute pressure.
Water hammers
Definations
Effects
Learners to:
-Take short notes
Discussion
Assignment
i. State factors to
consider when
selecting pumps
ii. Describe the
principle of
operation of a
pneumatic vessel
handout
3. 5,6 4
Hot
water
supply
2
By the end of the lesson the learner
should be able to;
i. Describe the operation of
instantaneous water heater.
ii. Describe the storage water
heaters for a given fuel
iii. Explain the by-law
requirements regarding
storage vessels.
iv. Calculate the specific heat
capacity
v. Calculate the relative cost of
using various fuels
vi. Calculate the heat lose from
a given surface.
vii. State regulation regarding
hot water systems.
operation of instantaneous water
heater.
Gas
Electrical
storage water heaters for
gas
electricity
solid fuels
storage vessels.
Size
Shape
Positioning
Supports
Materials
Tamping
Primatic cylinder.
by-law requirements regarding
storage vessels.
Heat capacity
Specific capacity
Latent heat
Sensi
Heat loss calculations from pipes
Cylinders
Hot water systems regulations
Indirect
Direct
Secondary circulations
Learners to:
Take short notes
Discussion
Assignment
i. Describe the
storage water
heaters for a
given fuel
Hand outs
4. 7 4
Drainage(above
ground)
By the end of the lesson the learner
should be able to:
i. Describe a given system of
above ground drainage.
ii. State the bylaws requirement
regarding the design of a
given system
iii. Describe the types of traps in
the sanitary appliances
iv. Describe the performance
and soundness tests on above
ground drainage.
v. Determine the diameter of
stacks and vents pipes for a
given number of sanitary
appliances
vi. Explain design requirements
for muilt storey buildings
system of above ground drainage.
One pipe systems
Two pipe system
Single stack stack system.
bylaws requirement regarding
One pipe systems
Two pipe system
Single stack stack system.
Traps
Common traps
Resealing traps/anti-siphon
traps
performance and soundness tests
diameter of stacks and vents
pipes
discharge unit methods
design requirements for muilt
storey buildings
offsets
bends
entry to drain
range of appliance
lowest branch connection
ventillations
Learners to:
Take short
notes
Discuss
-workout
examples
Assignment
Sketch the following
types of drainage
system
And state the design
requirement for each
One pipe systems
Two pipe system
Single stack stack
system.
Motivate
plumbing
practice by c.j
blower.
-handouts
5. 8 4
Gas
welding
By the end of the lesson the learner
should be able to:
i. State the safety precautions to
observed while using oxy-
acetylene welding equipment
ii. Explain characteristics of
different welding frames
iii. Illustrate a suitable welding
technique for a given task.
iv. Illustrate common defects in gas
welding
v. Describe various methods of
hard-soldering.
safety precautions
use of uquipment
storage of equipment
protective equipment
welding frames
oxidising
carburising
neutral
cutting flame
welding techniques
right
left
defects in gas welding
undercut
poor penetrations
porosity
methods of hard-soldering.
Bronze welding
Silver soldering
Brazing
Filler rods
Learners to:
Take short
notes
Discuss
Motivate
plumbing
practice by c.j
blower.
-handouts
9 2
END
TERM
EXAM
By the end of the topics the trainee
should be able to
i. Attempt atleast 90% of the
questions given correctively
ii. Answer atleast 70% of the
question provided
correctively
topics
all topics from introduction
Organize sitting
arragement
Receive test papers
and materials
Note instructions
Write the exam in
silence
Hand in scripts
when time is up
Sign the exams
sheet
Give feed back
-Motivate
plumbing
practice by c.j
blower.
-Plumbing
sylubus
Aids.
Question paper
Answer sheet
Wall clock
Marking
scheme
Trainer:patrick macharia kivuti
Signature:..............
Date:....................
Hod:
Signature:..............................
Date:........................
Principals name:.......................
Signature:............................
Date:......................................
6. MINISTRY OF EDUCATION
(State Department of Vocational & Technical Training)
KIENI TECHNICAL AND VOCATIONAL COLLEGE
P.O BOX 316 – 10102, KIGANJO, Tel: 0791-917 471;
E-mail: kienitech2019@gmail.com; info@kienitvc.ac.ke
Website: www.kienitvc.ac.ke
SCHEME OF WORK
DEPARTMENT:building and civil engineering LEVEL:Craft Certificate NO OF TRAINEE”
TRAINER NAME :Patrick Macharia CLASS:CPL DATE OF PREPARATION:
SUBJECT: plumbing theory. TERM:3:YEAR 2 DATE OF REVISION:
Wk Hours topic Objectives Key Points Application/Activities Ref. & Aids Remarks Date
Taught
1 1&2 Reporting and registration of student
Terms date Reporting week
for student
7. 2 2
Drainage
below
the
ground
By the end of the lesson the learner
should be able to:
i. Describe the various systems
of below ground drainage
ii. Describe the methods of
testing the drains
iii. State the regulations’
governing underground
drainage
iv. Describe the fuctions of
given traps
v. Describe the various sewage
disposal methods
vi. Determine the size of drain
pipes for a given quantity of
discharge
vii. Describe the equipment and
instruments used for setting
out drains.
viii. Book and reduce the levels
for the sewer lines.
systems of below ground
separate systems
partial systems
combined systems
methods of testing the drains
smoke test
hyrdaulic test
air test
obstruction test
alignment test
regulations’ governing
underground
access
support and protection
ventilation
gradient
discharges
sewage disposal methods
septic,cess pool,soak
pit,small treatment plants
drain pipes sizings
discharge units methods.
Probable flow methods
Chezy’s formular
setting out drains and levelling.
instrument
Dumpy level
Tilting level
Cowley level
Equipment
Levelling staff
Boning rod
Sight rail
Gradient board.
Booking and reduction
Procedure
Longtudinal sections
-Learners to:
-Take short notes
Assignment
i. Describe the
fuctions of given
traps
Grease
Petrol
interceptor
Silt traps
-Motivate
plumbing
practice by c.j
blower.
-handouts
8. 3 4
Gas
supply
By the end of the lesson the learner
should be able to;
i. Illustrate the layout of a gas
supply for domestic building
ii. State the purpuses of a given
controls and component in a
gas installation
iii. State bye-laws requirement
regarding gas installation
Describe the procedure for testing
gas pipework
layout of a gas supply for domestic
building
domestic systems
controls and component in a gas
installation
meters
regulators
governors
bye-laws requirement regarding
gas installation
materials
pipework
safety
testing gas pipework
air test
Learners to:
-Take short notes
Discussion
Assignment
i. State bye-laws
requirement
regarding gas
installation
ii. State the purpuses
of a given controls
and component in
a gas installation
meters
regulators
governors
Motivate
plumbing
practice by c.j
blower.
-handouts
4 4
Arc
welding
By the end of the lesson the learner
should be able to;
i. State safety precautions to be
observed,when using arc
welding equipment.
ii. Describe the arc welding
equipment
iii. State the common arc
welding joints
iv. Describe the given arc
welding defects
safety precautions to be observed,
equipment
storage
clothing
arc welding equipment
A.c equipment
d.c equipment
electrodes
arc welding joints
lap
butt
fillet
sympols used
welding defects
undercut
lack of penetration
porosity
overlap
slag inclusion
Learners to:
i. -Take short
notes
ii. Discussion
Assignment
iii. Sketch the
following
equipment and
discuss the
working
principles
iv. A.c equipment
v. d.c equipment
vi. electrodes
Handout
9. 5 4
Design
estimation
and
costing
By the end of the lesson the learner
should be able to;
i. Produce a working drawing
for a given plumbing task
ii. Estimate the required
materials for a given task
iii. Estimate cost for a given
plumbing task
Produce a working drawing
Plans
Sections
Isometric pipe layout
Estimation of materials
Pipingsand fittings
Sanitary appliances
Builders work in correction
Estimation of cost
Labour
Materials
Overheads
Profits
equipments
Learners to:
Take short notes
Discussion
Assignment
i. drawing a house
plan showing all
the plumbing
works showing all
the necessary cost
Hand outs
6 2
Cat
By the end of the topics the trainee
should be able to
i. Attempt atleast 90% of the
questions given correctively
ii. Answer atleast 70% of the
question provided
correctively
topics
all topics from
introduction
Organize sitting
arragement
Receive test papers
and materials
Note instructions
Write the exam in
silence
Hand in scripts
when time is up
Sign the exams
sheet
Give feed back
-Motivate
plumbing
practice by c.j
blower.
-Plumbing
sylubus
Aids.
Question paper
Answer sheet
Wall clock
Marking
scheme
10. 6,7 6
Cold
water
supply
3
By the end of the topics the trainee
should be able to:
i. Describe the given fire fighting
systems
ii. State the sources of water
supply for use in a given fire
protection systems.
iii. State the requirement of a given
figting systems.
iv. Determine the appropriate pipe
sizes for a cold water systems
using a given methods.
v. Describe the operations and
functions of a given component
in water pipelines.
vi. Describe the conditions which
causes a given type of flow in
pipes.
vii. Express the continuity
equations.
viii. Apply the quantity equations to
determine pipe flow parameters.
ix. Calculate the head lose in pipes
due to frictions.
x. Select a pump for a given
applications.
xi. Describe methods of
connections of supplies to water
mains of various diameters and
materials.
fire fighting systems
wet riser
dry riser
sprinkler systems
hose reel
external hydrants
fire fighting systems water sources
mains
elevated reservoir
automatic pump
pressure tank
requirement for figting systems.
Materials
Positioning
Sizing
Access
Methods of sizing of cold water systems
Loading unit methods
Box formular methods
operations and functions of component in
water pipelines.
Air valves
Washouts/scour valves
Break pressure tanks
Sluice valves
Water meters
Types of flow in pipes.
Steady flow
Turbulent flow
Lamina flow
Continuity equations.
Deriving of equations
Calculations using equations.
Applications of quantity equations
Calculations to determine
discharge velocity and area.
Branchings
Enlargments and reductions.
Frictions losses
Darcy formular
Pump selections
Head
Power
Capacity
sitting
Learners to:
Take short notes
Discussion
calculations
handout
11. 8 4
Hot
water
system
3
By the end of the topics the trainee
should be able to:
i. Illustrate the layout of a
given hot water system to a
large buildings.
ii. Illustrate the layout of a
steam systems
iii. Describe various component
used in steam pipe systems.
iv. Determine the amount of hot
water required for a given
populations
v. Describe the operations of a
commercial boilers.
vi. Explain the purposes of
boilers mountings
vii. Illustrate the layout of solar
water heating systems.
Hot water systems
Centralised
Electric
Zoned
Steam systems component.
Traps
Trapping set
Pressure reducing set
Calorifiers
Calculations of quantities.
Demands
Storage
Commercial boilers
Cast iron sections
Shell
Boiler mounting
Safety valves
Thermostart
Solar heating systems
Gravity
Pumped
Direct
indirect
Learners to:
Take short notes
Discussion
calculations
Handouts
Trainer:patrick macharia kivuti
Signature:..............
Date:....................
Hod:
Signature:..............................
Date:........................
Principals name:.......................
Signature:............................
Date:......................................