Technical Drawing - Exam Papers - Ordinary - 2007 - Building

Question 4

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Fig. 4 shows the outline plan of a canopy at the entrance to a shopping centre.
It consists of two adjoining hyperbolic paraboloid surfaces ABCD and ADEF.

The corners B and F are at ground level. Corners C and E are 5m above ground level and the corners A and D are 10m above ground level.

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

(b) Project an end elevation of the canopy.

(c) Determine the true shape of the section S-S through the canopy surface.

Scale 1 : 100

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