1. Engineering Graphics 2018-19-I
Lecture 9
TA101A
Engineering Graphics I By
Dr. Mukesh Sharma
Professor
DEPARTMENT OF CIVIL ENGINEERING
INDIAN INSTITUTE OF TECHNOLOGY KANPUR
KANPUR , INDIA

2. Parallel
Downward receding direction

6. Isometric and Oblique projections

8. Front View
Right Side View
Visualize the Object
Oblique view of an object with Oblique surfaces

9. Note: a’,a’’,b’,b’’,c’c’’ exist but not shown Due to space limitation
e,e’e”
5,5’,5”
5 e
5’e’
5”e’’
d,d’d”
4,4’,4” 4d
4’d’
4”d”
3,3’,3” c 3 c 3’ c’ 3” c”
2,2’,2” b 2b
2’b’
2”b” a
1,1’,1” 1 a 1’ a’ 1” a” 5” e” 4”
Projection of front face in RSV,
If front face not oblique but parallel to PP 5’ 3” 4’ 2” 1” e’ 3’ 5 4 e b’ 2’ a’ 3 1’ b 2 a 1

10. Oblique View of Cylinder

11. What kind of 3-d Pictures are these? As seen by eyes - Pleasing
Perspective Pictures – How different are these from isometric/oblique drawing

12. Projection line Horizon line Axis of vision Ground Line
Picture Plane
Horizon line
Axis of vision
Horizon Plane SP
Ground Plane
Center of vision
Ground Line

13. Front View Objective is to get this picture on PP
Key is convergence of rays at SP
Picture Plane (PP) (transparent)
TOP VIEW
Any Convenient Distance PP HL GL AV cv SP X
Front View
Horizon line (HL)
Horizon Plane (HP)
SP(EYE)
Ground Plane
Center of vision (CV)
Ground Line (GL)

14. b C B b b A c d b a a a a For A, B and C examine Projection on PP g dh g d f b a a a h e f e a b ø a ø ø PP PP PP u PP a1 b1
LVP HL
RVP HL VP
RVP HL ø ø SP SP SP
For A, B and C examine
Projection on PP