building construction Paper 2 WASSCE (PC 2ND), 2022

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.

(iii)two-way switch