a. List four types of test that are carried out on a drainline.
b. List three methods of a electrical wiring in a domestic building.
c. State the function of each of the following roof members:
- rafter;
- wall plate
- ridge board.
d. List two materials suitable for finishing the floor of a kitchen in a domestic building
Some candidates were able to:
- List three methods of a electrical wiring in a domestic building:
- List two materials suitable for finishing the floor of a kitchen in a domestic building
However, most of them failed to:
- List four types of test that are carried out on a drainline.
- State the function of each of the following roof members:
- rafter;
- wall plate
- ridge board.
The expected response to question 4 (a) and (c) is as given below:
(a) Types of Test Carried out on drain line
- Smoke test
- Ball test
- Mirror/torch test
- Air test
- water/hydraulic test
(c ) Function of the following Roof Members:
- Rafter:
- to set the slope of the roof;
- it receives the fascia board;
- to support the purlin.3
- Wall Plate:
- provides a fixing for the trusses;
- it distributes the load of roof evenly on the walls;
- it provides a uniform level on which the tie beams are fixed;
- Ridge board:
vertical board through which rafters are nailed.