Technical Drawing - Exam Papers - Higher - 2001 - Building

Question 2

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Fig. 2 shows the outline plan, elevation and end elevation of roof surfaces and a dormer window. Surface B has a pitch of 30° and surface E has a pitch of 40°. The dihedral angle between the surfaces A and B is 145°. The dihedral angle between the surfaces B and C is 140°.

(a) Draw the given plan, elevation and end elevation.

(b) Determine the dihedral angle between the surfaces B and E.

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