Question 1

  Candidates were expected to:

1. copy the given views correctly;
2. draw the square pipe □30 in end elevation;
3. draw the cone and square pipe in elevation;
4. draw the cone and square pipe in plan;
5. divide the side of the square pipe in the end view into a number of parts;
6. project the divisions horizontally to the side of cone in elevation and vertically down to plan;
7. draw the concentric circles;
8. draw end view of the square pipe in the plan and project the divisions from the end view in elevation;
9. project horizontal lines from the end elevation in plan to intersect concentric circles;
10. draw curves of intersection in plan;
11. draw curves of interpenetration in elevation;
12. draw the perimeter (QQ) of the square pipe;
13. transfer the divisions on the square pipe to each side of the perimeter;
14. draw the corresponding ordinates at the division points from plan or elevation;
15. join the ends of ordinates into smooth curves;
16. define the corners of the square pipe;
17. use PQ as seam;
18. draw neatly.

The solution is shown below