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A circular plate of negligible thickness and 50 mm diameter appears as an ellipse in the front view, having its major axis 50 mm long and minor axis 30 mm long. Draw its top view when the major axis of the ellipse is horizontal. Ashoka Institution

Projection of Circular plane step by Step Process

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Page 1: Projection of Circular plane step by Step Process

A circular plate of negligible thickness and 50 mm diameter appears as an ellipse in the front view, having its major axis 50 mm long and minor axis 30 mm long. Draw its top view when the major axis of the ellipse is horizontal.

Ashoka Institution

Page 2: Projection of Circular plane step by Step Process

Draw XY line as shown

X Y

Page 3: Projection of Circular plane step by Step Process

Draw a circle as shown

50 Ø

X Y

Page 4: Projection of Circular plane step by Step Process

X Y

50 Ø

Draw Top view as shown

Page 5: Projection of Circular plane step by Step Process

X Y

50 Ø

Page 6: Projection of Circular plane step by Step Process

X Y

1’

2’

3’4’

5’

6’

7’

8’

9’10’

11’

12’

50 Ø

Name the Point as shown

Page 7: Projection of Circular plane step by Step Process

X Y

1’

2’

3’4’

5’

6’

7’

8’

9’10’

11’

12’

50 Ø Draw Projectors as shown

Page 8: Projection of Circular plane step by Step Process

X Y

1’

2’

3’4’

5’

6’

7’

8’

9’10’

11’

12’

50 Ø Name the points as shown

1 2, 12

3, 11

4, 10

5, 9

6, 8

7

Page 9: Projection of Circular plane step by Step Process

X Y

1’

2’

3’4’

5’

6’

7’

8’

9’10’

11’

12’

50 Ø

1 2, 12

3, 11

4, 10

5, 9

6, 8

7

30

Draw a line as shown

Page 10: Projection of Circular plane step by Step Process

X Y

1’

2’

3’4’

5’

6’

7’

8’

9’10’

11’

12’

50 Ø

1 2, 12

3, 11

4, 10

5, 9

6, 8

7

30

Draw a line as shown

Page 11: Projection of Circular plane step by Step Process

X Y

1’

2’

3’4’

5’

6’

7’

8’

9’10’

11’

12’

50 Ø

1 2, 12

3, 11

4, 10

5, 9

6, 8

7

30

Transfer the top view as shown

Page 12: Projection of Circular plane step by Step Process

X Y

1’

2’

3’4’

5’

6’

7’

8’

9’10’

11’

12’

50 Ø

1 2, 12

3, 11

4, 10

5, 9

6, 8

7

30 12, 12

3, 11

4, 10

5, 9

6, 8

7

Transfer the points on the top view as shown

Page 13: Projection of Circular plane step by Step Process

X Y

1’

2’

3’4’

5’

6’

7’

8’

9’10’

11’

12’

50 Ø

1 2, 12

3, 11

4, 10

5, 9

6, 8

7

30 12, 12

3, 11

4, 10

5, 9

6, 8

7

Draw Projector as shown

Page 14: Projection of Circular plane step by Step Process

X Y

1’

2’

3’4’

5’

6’

7’

8’

9’10’

11’

12’

50 Ø

1 2, 12

3, 11

4, 10

5, 9

6, 8

7

30 12, 12

3, 11

4, 10

5, 9

6, 8

7

Draw Projector as shown

Page 15: Projection of Circular plane step by Step Process

X Y

1’

2’

3’4’

5’

6’

7’

8’

9’10’

11’

12’

50 Ø

1 2, 12

3, 11

4, 10

5, 9

6, 8

7

30 12, 12

3, 11

4, 10

5, 9

6, 8

7

Mark the intersection points as shown

Page 16: Projection of Circular plane step by Step Process

X Y

1’

2’

3’4’

5’

6’

7’

8’

9’10’

11’

12’

50 Ø

1 2, 12

3, 11

4, 10

5, 9

6, 8

7

30 12, 12

3, 11

4, 10

5, 9

6, 8

7

Join the points as shown

Page 17: Projection of Circular plane step by Step Process

X Y

1’

2’

3’4’

5’

6’

7’

8’

9’10’

11’

12’

50 Ø

1 2, 12

3, 11

4, 10

5, 9

6, 8

7

30 12, 12

3, 11

4, 10

5, 9

6, 8

7

Mark the points as shown

1 1’

111’

121’

2 1’

3 1’ 4 1

5 1’

6 1’

8 1’

9 1’

101’

7 1’

Page 18: Projection of Circular plane step by Step Process

X Y

1’

2’

3’4’

5’

6’

7’

8’

9’10’

11’

12’

50 Ø

1 2, 12

3, 11

4, 10

5, 9

6, 8

7

30 12, 12

3, 11

4, 10

5, 9

6, 8

7

Re draw the front view as shown as shown

1 1’

111’

121’

2 1’

3 1’ 4 1

5 1’

6 1’

8 1’

9 1’

101’

7 1’

11’121’ 21’31’

41’

51’61’81’

91’

71’

101’

111’

Page 19: Projection of Circular plane step by Step Process

X Y

1’

2’

3’4’

5’

6’

7’

8’

9’10’

11’

12’

50 Ø

1 2, 12

3, 11

4, 10

5, 9

6, 8

7

30 12, 12

3, 11

4, 10

5, 9

6, 8

7

1 1’

111’

121’

2 1’

3 1’ 4 1

5 1’

6 1’

8 1’

9 1’

101’

7 1’

11’121’ 21’31’

41’

51’61’81’

91’

71’

101’

111’

Draw the Projector as shown

Page 20: Projection of Circular plane step by Step Process

X Y

1’

2’

3’4’

5’

6’

7’

8’

9’10’

11’

12’

50 Ø

1 2, 12

3, 11

4, 10

5, 9

6, 8

7

30 12, 12

3, 11

4, 10

5, 9

6, 8

7

1 1’

111’

121’

2 1’

3 1’ 4 1

5 1’

6 1’

8 1’

9 1’

101’

7 1’

11’121’ 21’31’

41’

51’61’81’

91’

71’

101’

111’

11’ 21’

31’

41’

51’

61’71’81’

91’

101’

111’

121’

Mark the inter section Point as shown

Page 21: Projection of Circular plane step by Step Process

X Y

1’

2’

3’4’

5’

6’

7’

8’

9’10’

11’

12’

50 Ø

1 2, 12

3, 11

4, 10

5, 9

6, 8

7

30 12, 12

3, 11

4, 10

5, 9

6, 8

7

1 1’

111’

121’

2 1’

3 1’ 4 1

5 1’

6 1’

8 1’

9 1’

101’

7 1’

11’121’ 21’31’

41’

51’61’81’

91’

71’

101’

111’

11’ 21’

31’

41’

51’

61’71’81’

91’

101’

111’

121’

Join the points as shown

Page 22: Projection of Circular plane step by Step Process

X Y

1’

2’

3’4’

5’

6’

7’

8’

9’10’

11’

12’

50 Ø

1 2, 12

3, 11

4, 10

5, 9

6, 8

7

30 12, 12

3, 11

4, 10

5, 9

6, 8

7

1 1’

111’

121’

2 1’

3 1’ 4 1

5 1’

6 1’

8 1’

9 1’

101’

7 1’

11’121’ 21’31’

41’

51’61’81’

91’

71’

101’

111’

11’ 21’

31’

41’

51’

61’71’81’

91’

101’

111’

121’

Front view

Top viewScale 1:1All Dimensions are mm