Technical Drawing - Exam Papers - Ordinary - 2004 - Building

Question 4

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Fig. 4 shows the outline plan of two adjoining hyperbolic paraboloid roof surfaces ABCD and BEDC.

The corners B and D are at ground level. Corners A and E are 6m above ground level and corner C is 8m above ground level.

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

(b) Determine the true shape of the section S-S through the roof surfaces.

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