Most candidates were able to:
- list the types of trap used in plumbing fittings;
- state advantages of conduit wiring over surface wiring.
However, few of them failed to:
- sketch the traps;
- state suitable finishes for the given locations in a domestic building.
The expected response to question 3 is as given below:
(a)(i) 1. Bottle trap
2. Running trap
3. S – trap
4. P – trap
(b) 1. Conduit wiring facilitates rewiring without damaging the wall
fabric materials.
2. Conduit wiring is more durable than surface wiring.
3. Conduit wiring has great thermal insulation than surface wiring.
4. Conduit wiring has better fire resistance.
5. It provides neater wall surfaces.
(c) (i) Living room floor (ii) External surface
Insitu screeding Washed terrazzo
Terrazzo floor finish Cement/sand rendering
Granolithic floor finish Tiles
Marble Mosaic
Tiling Marble
Ceramic
P.V.C.
Terrazzo tiles