Observation

Most of the candidates were able to:

• state the use of fire repellents chemicals in preventing fire spread;
• list the materials used in construction of a staircase;
• state the functions of fanlight and transom.

However, the candidates failed to:

• State the measure to be taken in preventing decay of timber and insects attack.

The expected response to question 4 is as given below:

• Measures to be taken in preventing each of the following:
• Fire spread:
• treat the timber members with fire resistance chemical;
• cover  timber members with combustible materials;
• sleeper wall should be solid in one direction.
• Decay of timber members:-
• damproof course should be introduced to prevent ground moisture reaching any timber;
• there should be a vent brick/blocks for adequate ventilation;
• treat surfaces of members with water repellent materials/chemicals/oil based.

• Insect attack:-
• should be treated with fungicide/preservatives;
• should be well seasoned.

• Materials used in the construction of staircase:
• timber/wood/bamboo;
• stones;
• concrete;
• metals such as steel bars, alluminium, cast iron, brass, bronze;
• plastics;
• glass.
• One function of each of the following:
• Fanlight -    
• to permit borrowed light/allow borrowed light;
• to permit daylight into the room;
• to permit/allow ventilation into the room.
• Transome –
• It is the part that separates the fanlight from the door sash;
• It is he horizontal piece that separates the fixed from the moving parts of the door;
• It is a member across the top of door.