TA Lecture at Indian institute of technology kanpur of bachelor of technology or bachelor of science in first year.

1. Department of Civil Engineering
Indian Institute of Technology Kanpur
TA 111 2023 – 2024 Sem - 1 Prof. Sudhir Misra
TA 101: Engineering Graphics
2023 - 24 Sem – I
Lecture 7 – August 28, 2023
Oblique views
Sudhir Misra
Department of Civil Engineering
IIT Kanpur, Kanpur 208 016
1
Room No.: WLE 303 C;
Phone – 7346
E-mail: sud@iitk.ac.in

2. Department of Civil Engineering
Indian Institute of Technology Kanpur
TA 111 2023 – 2024 Sem - 1 Prof. Sudhir Misra
1
1 1
1
0.5, 1.0, 0.75
Locating on a Non-isometric Plane
Locate the center
of the circle.
Point 1 coordinates?

3. Department of Civil Engineering
Indian Institute of Technology Kanpur
TA 111 2023 – 2024 Sem - 1 Prof. Sudhir Misra
3

4. Department of Civil Engineering
Indian Institute of Technology Kanpur
TA 111 2023 – 2024 Sem - 1 Prof. Sudhir Misra
4

5. Department of Civil Engineering
Indian Institute of Technology Kanpur
TA 111 2023 – 2024 Sem - 1 Prof. Sudhir Misra
• Produces 3-D views
• Process very different when compared to creating isometric view
• Do not look perpendicular through projection plane
• Object is not rotated
• Object remains with a major face parallel to projection plane
• Now one looks the projection plane with an oblique angle
• Axes of height and width remains at 90 degrees
• Axis of depth can vary in angle, ø
• What is specialty of oblique projection.
Oblique
Isometric
S
R
U 35 to 450
Oblique Projections

6. Department of Civil Engineering
Indian Institute of Technology Kanpur
TA 111 2023 – 2024 Sem - 1 Prof. Sudhir Misra
1. Draw a rectangle – overall width and
height of the object
2. Extend parallel lines from each corner
of the box back at an angle
3. Mark the extension lines at a point
equal to the depth of the object.
4. Connect depth lines to form box.
5. Add any details such as holes, notches,
onto the front view (True size & True
Shape).
6. Extend the details the depth of the
object.
7. Complete sketch by darkening the
object lines
8. Hidden line usually not shown
MAKING AN OBLIQUE DRAWING

7. Department of Civil Engineering
Indian Institute of Technology Kanpur
TA 111 2023 – 2024 Sem - 1 Prof. Sudhir Misra

8. Department of Civil Engineering
Indian Institute of Technology Kanpur
TA 111 2023 – 2024 Sem - 1 Prof. Sudhir Misra
40
50
50 90
65
25
R15
300

9. Department of Civil Engineering
Indian Institute of Technology Kanpur
TA 111 2023 – 2024 Sem - 1 Prof. Sudhir Misra
y
300
X
z
0
90
40
300
90
50
65
50
R15
40
25

10. Department of Civil Engineering
Indian Institute of Technology Kanpur
TA 111 2023 – 2024 Sem - 1 Prof. Sudhir Misra
600
450
C
300
900
A
B
Receding axis is usually
Drawn at 300, 450 or 600
With the horizontal
Construct area
(b)
Draw the front face
(c)
Given
(a)
Parallel
Construct receding surface
(d)
Draw arc on the rear face
(e)
Heave the outline
(f)

11. Department of Civil Engineering
Indian Institute of Technology Kanpur
TA 111 2023 – 2024 Sem - 1 Prof. Sudhir Misra
50
10
20
20
R 26
50
20
50 70
Ø 26

12. Department of Civil Engineering
Indian Institute of Technology Kanpur
TA 111 2023 – 2024 Sem - 1 Prof. Sudhir Misra
20
50
50
50
70
ø26
R26
50
20 50 70
Ø 26
10
20
20
R26

13. Department of Civil Engineering
Indian Institute of Technology Kanpur
TA 111 2023 – 2024 Sem - 1 Prof. Sudhir Misra
How to select front face?

14. Department of Civil Engineering
Indian Institute of Technology Kanpur
TA 111 2023 – 2024 Sem - 1 Prof. Sudhir Misra
A
B
C
All Oblique views. Which one is preferred face?

15. Department of Civil Engineering
Indian Institute of Technology Kanpur
TA 111 2023 – 2024 Sem - 1 Prof. Sudhir Misra
A
B
How to select front – contd…

16. Department of Civil Engineering
Indian Institute of Technology Kanpur
TA 111 2023 – 2024 Sem - 1 Prof. Sudhir Misra
List differences in Isometric and Oblique views

17. Department of Civil Engineering
Indian Institute of Technology Kanpur
TA 111 2023 – 2024 Sem - 1 Prof. Sudhir Misra

18. Department of Civil Engineering
Indian Institute of Technology Kanpur
TA 111 2023 – 2024 Sem - 1 Prof. Sudhir Misra

19. Department of Civil Engineering
Indian Institute of Technology Kanpur
TA 111 2023 – 2024 Sem - 1 Prof. Sudhir Misra

20. Department of Civil Engineering
Indian Institute of Technology Kanpur
TA 111 2023 – 2024 Sem - 1 Prof. Sudhir Misra

21. Department of Civil Engineering
Indian Institute of Technology Kanpur
TA 111 2023 – 2024 Sem - 1 Prof. Sudhir Misra
Thank you!
21