(a) Sketch a two-panel door and label the following parts:
- panel;
- middle rail;
- stile;
- top rail.
(b) Use a sketch to illustrate a method of preventing the uplift of a roof by strong winds.
(c) (i) State two measures for preventing steel reinforcement bars in concrete floor
slabs from pulling out.
- Sketch to illustrate each of the measures stated in 4 (c) (i).