Technical Drawing - Exam Papers - Ordinary - 2006 - Building

Question 2

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Shown are the outline plan and elevation of a roof.
Surfaces A and B have a pitch of 50°.
Surfaces C and D have a pitch of 45°.

(a) Draw the given plan and elevation of the roof.

(b) Develop the surfaces S1 and S2.

(c) Find the dihedral angle between the roof surfaces A and D.

Scale 1 : 100

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