Technical Drawing - Exam Papers - Ordinary - 1996 - Building

Question 2

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Fig. 2 shows the outline plan and elevation of a lean - to roof.
Surface A has a pitch of 30°, surface B has a pitch of 40° and surface C has a pitch of 45°.

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

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