Technical Drawing - Exam Papers - Higher - 2003 - Building

Question 2

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Fig. 2 shows the outline plan and elevation of roof surfaces.

Surface A has the same pitch as surface B and the dihedral angle between surfaces A and B is 130°. Surface C has a pitch of 25º and surface D has a pitch of 40°. The dihedral angle between surfaces D and E is 125º.

(a) Draw the given plan and elevation.

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

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