waecE-LEARNING
Building Construction Paper 2,Nov/Dec. 2012  
Questions:   1 2 3 4 5   Main
General Comments
Weakness/Remedies
Strength




Question 5

  1. Sketch the conventional symbol for each of the following:
                            (i)         fluorescent tube;
                            (ii)        one-way switch.

                (b)       State three locations on a drainline where an inspection chamber is required.

                (c)        List four materials used for the manufacture of drain pipes.

    1. Sketch a section through a water-closet with a P-trap and indicate the following parts:

                  (i)         water seal;
                  (ii)        flushing rim.

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OBSERVATION

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)

 

 

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