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