Technical Drawing - Exam Papers - Ordinary - 2008 - Building
Fig. 4 shows the outline plan of two adjoining hyperbolic paraboloid roof surfaces ABCD and CDEF.
The roof perimeter is a regular pentagon in plan.
The corners A and E are at ground level, corners B and F are 4m above ground level, corner C is 8m above ground level and corner D is 12.5m above ground level.
(a) Draw the given plan of the roof and project an elevation.
(b) Project an end elevation of the roof.
(c) Determine the curvature of the roof along a line joining A to F.
Scale 1 : 100