Most candidates were able to:

• state three locations on a drainline where an inspection chamber is required;
• list materials used for the manufacture of drain pipes

However, some of them were unable to sketch:

• the conventional symbol for the given electrical fittings;
• a section through a water-closet with a P-trap.

The expected response to question 5 is as given below:

1. An inspection chamber is required on a drain line where there is a

-           change in direction;
-           change in gradient;
-           tributary (branch) line and a main line.

1. -           Asbestos – cement

-           Pitch – fibre
-           Polyvinyl chloride (P.V.C)
-           Glazed – clay
-           Cast – iron.

(c)