Most candidates were able to state the factors that influence the choice of a roof. However, majority of the candidates were unable to:
- reproduce the sketch to show details of steel reinforcement;
- label the parts. The expected response to question 4 is as given below:

4(a) Factors that influence the choice of a roof are:
(a) Span of the building.
(b) Loads on the roof structure.
(c) Weather/climatic conditions.
(d) Type and function of the building.
(e) Location of the building.

(b)