Observation

Most candidates were able to:
Explain each of the following activities in relation to site operation:
            (a)        site clearing;
            (b)       site leveling.
-           List threematerials used for pavement construction.
However, some of the candidates were not able to:

• state two reasons for the construction of kerbs on access roads.
• state two reasons for using a metal fencewall gate instead of a wooden gate.

The expected response to question 5 (a) and (c) is as given below:

Factors to be considered before excavating a foundation trench:

• method of ensuring safety when working in the trench;
• type(s) of excavation machinery/tools to use;
• method of keeping excavation free from ground water;
• length of time excavation will be left open;
• method of preventing trench sides from caving in.

(c)Constructional requirements of a steel reinforcing bar placed in a wide-strip foundation:
  to resist tensile stresses;

• to strengthen the concrete foundation;
• to prevent fracture to foundation concrete;
• must have adequate cover.