Technical Drawing - Exam Papers - Higher - 1992 - Building
Fig. 4 shows the plan and elevation of a piece of sculpture in the form of a semi-hyperboloid of revolution whose ends have been cut as shown. Also, shown in plan is a straight-line element AB of the complete hyperboloid of revolution. The true length of AB which is 3m is seen in plan.
(a) Draw the given plan and elevation.
(b) Determine the true shape of the surface EFG.