Building Construction Paper 1, May/June. 2013

Building Construction Paper 2, May/June. 2013

Questions:		1	2	3	4	5		Main

General Comments
Strength
Weakness/Remedies

Question 5
(a) Sketch each of the following traps used in plumbing works: (i) P-trap; (ii) S-trap. (b) State the function of each of the following: (i) baffle wall in a septic tank; (ii) benching in a manhole; (iii) soakaway chamber in a septic tank. (c) List four factors to be considered when selecting a floor finish (i) Reproduce the sketch and show details of steel reinforcements in the slab and beams. (ii) Label any four parts.
_____________________________________________________________________________________________________
Observation
Few candidates were able to: - sketch the given types of trap used in plumbing works; - state the function of baffle wall in a septic tank; However, majority of them were unable to state the function of: - benching in a manhole; - soakaway chamber in a septic tank The expected response to question 5 is as given below: 5(a) (C) Factors to be considered when selecting a floor finish are: (1) Resistance to wear. (2) Ease of cleaning. (3) Resistance to grease and oil. (4) Resistance to water. (5) Warmth/comfort. (6) Resistance to noise. (7) Resistance to indentation. (8) Cost of constructing the floor. (9) Ease of placing. (10) Appearance. (11) Durability.