Technical Drawing - Exam Papers - Higher - 2000 - Building
Fig. 2 shows the outline plan and elevation of roof surfaces and a dormer window. Surface A has a pitch of 50° and surface B has a pitch of 45°. The line of intersection between surfaces A and D has a true inclination of 35° to the horizontal plane. Surfaces E and G have a pitch of 50° and surface F has a pitch of 15°. The dihedral angle between the surfaces C and D is 100°.
(a) Draw the given plan and elevation.
(b) Determine the dihedral angle between the surfaces A and B.
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