2. PRESENTED BY :-
NAME :- UJJWAL RAJ
REG.NO.:- 21105109040
NAME :- UTKARSH RAJ
REG .NO.:- 21105109052
NAME :- VIKASH SINHA
REG.NO.:-21105109028
3. 5
Orthographic projection is a parallel projection technique
in which the parallel lines of sight are perpendicular to the
projection plane
MEANING
Object views from top
Projection plane
1
2
3
4
5
1 2 3 4
4. Orthographic projection technique can produce either
1. Multiview drawing
that each view show an object in two dimensions.
2. Axonometric drawing
that show all three dimensions of an object in one view.
Both drawing types are used in technical drawing for
communication.
NOTES
ORTHOGRAPHIC VIEW
5. Axonometric (Isometric) Drawing
Easy to understand
Right angle becomes obtuse angle.
Circular hole
becomes ellipse.
Distortions of shape and size in isometric drawing
Advantage
Disadvantage Shape and angle distortion
Example
6. Multiview Drawing
It represents accurate shape and size.
Advantage
Disadvantage Require practice in writing and reading.
Multiviews drawing (2-view drawing)
Example
7. ORTHOGRAPHIC PROJECTIONS:
Horizontal Plane (HP),
Vertical Frontal Plane ( VP )
Side Or Profile Plane ( PP)
Different Reference planes are
FV is a view projected on VP.
TV is a view projected on HP.
SV is a view projected on PP.
And
Different Views are Front View (FV), Top View (TV) and Side View (SV)
IT IS A TECHNICAL DRAWING IN WHICH DIFFERENT VIEWS OF AN OBJECT
ARE PROJECTED ON DIFFERENT REFERENCE PLANES
OBSERVING PERPENDICULAR TO RESPECTIVE REFERENCE PLANE
8.
9. Orthographic Projections are a collection of 2-D drawings that work together to give an
accurate overall representation of an object.
Defining the Six
Principal Views or
Orthographic Views
engineering108.com
10.
A.V.P.
to Hp & to Vp
PLANES
PRINCIPAL PLANES
HP AND VP
AUXILIARY PLANES
Auxiliary Vertical Plane
(A.V.P.)
Profile Plane
( P.P.)
Auxiliary Inclined Plane
(A.I.P.)
