Technical Drawing - Exam Papers - Ordinary - 1999 - Building

Question 2

Fig. 2 shows the outline plan and elevation of a roof. Surface A has a pitch of 40°, surface B has a pitch of 30° and surface C has a pitch of 35°.

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

Scale 1 : 100