Projection of rectangular Plane
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- A thin rectangular plate measuring 60 mm x 30 mm has its shorter 30 mm side along the vertical plane and inclined at 30 degrees to the horizontal plane. - The document provides step-by-step instructions for projecting the top view of the rectangular plate given that its front view is a 30 mm square. - The resulting top view projection is a trapezium with sides of lengths 30 mm, 60 mm, 30 mm and 60 mm and the shorter base making an angle of 30 degrees with the longer base.
Projection of rectangular Plane
- 1. A thin rectangular plate of sides 60 mm X 30 mm has its shorter side in the V.P. and inclined at 300 to the H.P. Project its top view if its front view is a square of 30 mm long sides
- 2. X Y Draw XY line as shown
- 3. X Y 60 30 A rectangle can be seen as a square in the F.V. only when its surface is inclined to VP. So for the first view keep the plane // to VP & shorter edge to HP┴ Draw rectangle as shown
- 4. X Y 60 30 a’ b’ c’ d’ Name the points as shown
- 5. X Y 60 30 a’ b’ c’ d’ Draw projectors as shown
- 6. X Y 60 30 a’ b’ c’ d’ Draw Top view as shown
- 7. X Y 60 30 a’ b’ c’ d’ b (a) C( d) Name the points as shown
- 8. X Y 60 30 a’ b’ c’ d’ b (a) C( d) F.V. (square) is drawn first Draw square as shown
- 9. X Y 60 30 a’ b’ c’ d’ b (a) C( d) a1’ b1’ c1’ d1’ Name the points as shown
- 10. X Y 60 30 a’ b’ c’ d’ b (a) C( d) a1’ b1’ c1’ d1’ Draw projector as shown
- 11. X Y 60 30 a’ b’ c’ d’ b (a) C( d) a1’ b1’ c1’ d1’ Transfer top view as shown
- 12. X Y 60 30 a’ b’ c’ d’ b (a) C( d) a1’ b1’ c1’ d1’ 300 Draw a line as shown
- 13. X Y 60 30 a’ b’ c’ d’ b (a) C( d) a1’ b1’ c1’ d1’ Transfer front view as shown
- 14. X Y 60 30 a’ b’ c’ d’ b (a) C( d) a1’ b1’ c1’ d1’ Draw projector as shown
- 15. X Y 60 30 a’ b’ c’ d’ b (a) C( d) a1’ b1’ c1’ d1’ Draw projector as shown
- 16. X Y 60 30 a’ b’ c’ d’ b (a) C( d) a1’ b1’ c1’ d1’ a1b1 c1 d1 Mark the points as shown
- 17. X Y 60 30 a’ b’ c’ d’ b (a) C( d) a1’ b1’ c1’ d1’ a1b1 c1 d1 Join the points as shown
- 18. X Y 60 30 a’ b’ c’ d’ b (a) C( d) a1’ b1’ c1’ d1’ a1b1 c1 d1 FRONT VIEW TOP VIEW ALL DIMENSIONS ARE IN MM SCALE 1:1 300