Technical Drawing - Exam Papers - Higher - 2000 - Building
Fig. 5 shows the outline plan and
elevation of a roof. The hyperbolic
paraboloid surfaces ABEF and
BCDE are extensions of the smaller
hyperbolic paraboloid surfaces AHGF and
CDGH, respectively. The roof perimeter is
(a) Draw the given plan and elevation and project an end elevation.
(b) Determine the curvature of the roof along a line from A to D.
(c) Determine the traces of the plane director for the edges AH and FG of the surface AHGF and having its horizontal trace passing through A.
Scale 1 : 200