1. Engineering Graphics 2018-19-I
Lecture 20
TA101A
Engineering Graphics I By
Dr. Mukesh Sharma
Professor
DEPARTMENT OF CIVIL ENGINEERING
INDIAN INSTITUTE OF TECHNOLOGY KANPUR
KANPUR , INDIA

2. Normal views of oblique surfaces and construction of Front and Top views
Center Plane
Reference
Plane No.1

3. Complete Orthographic Projections to the extent you can do
Center Plane
Reference
Plane No.1 A CL B
RP - I
RP - I
Complete Orthographic Projections to the extent you can do
Look for a line in TL and is common/intersection of oblique and other plane
It is line AB – get the point view of AB so to get EV of planes
Locate RP1 and convenient place so that ……

4. Center Plane
Reference
Plane No.1 A CL CL B
B-A B A
RP-I
RP-I

5. On back face On front face PI CL SI CL S P P.PI P PI S SI PI RP-I P

6. From True shape of Oblique Surface and concepts of auxiliary plane,
Center Plane
Reference
Plane No.1 CL CL
RP-I
RP-I
Concluding:
From True shape of Oblique Surface and concepts of auxiliary plane,
We created front and top view of oblique surface.

8. Intersection of line and solid-cutting plane method1 2 3 O H 4 5 H Z H Y H X H F F 1 2 3 O F Y F 4 5 F X F Z
Intersection of line and solid-cutting plane method