Technical Drawing - Exam Papers - Ordinary - 1998 - Building

Question 2

Fig. 2 shows the outline plan and elevation of a roof. The roof perimeter is a regular hexagon in plan. The surfaces A and D have a pitch of 30° and surfaces B, C, E and F have a pitch of 40°.

(a) Draw the given plan and elevation of the roof.
(b) Develop the roof surfaces A and B.
(c) Determine the dihedral angle between the surfaces A and F.

Scale 1 : 100