Technical Drawing - Exam Papers - Ordinary - 2002 - Building

Question 4

  

Fig. 4 shows the outline plan of four adjoining hyperbolic paraboloid roof surfaces ABOH, BCDO, DEFO and FGHO. The roof perimeter is a square in plan.

The corners, A, B, C, D, E, F, G and H are at ground level, corner O is 22m above ground level.

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

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

Scale 1 : 200

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