Technical Drawing - Exam Papers - Higher - 2001 - Building
Fig. 4 (a) shows a pictorial view of a shell structure unit. This unit is combined with four other similar units to form a total roof surface as shown in plan in Fig. 4 (b). The surface of the unit is generated by translating the parabola ABC in a vertical position along the parabola BF whose vertex is at F.
(a) Draw a plan, elevation and end elevation of the unit.
(b) Determine the true shape of the curve EF.
Scale 1 : 200