Most candidates were able to:
-
state the functional requirements of a roof;
-
list the materials used for roof covering.
However, some candidates were unable to:
-
state types of floor;
-
list examples of each floor.
The expected response to question 4 is as given below:
(a)
Three functional requirements of a roof are:
- stability;
- strength;
- weather resistance or exclusion of wind, sun or rain;
- durability;
- fire resistance;
- thermal insulation;
- sound insulation;
- provide enclosure for service; facilities
- aesthetics.
(b) Materials used for roof covering are:
- thatch;
- galvanised corrugated iron sheets;
- corrugated asbestos cement sheet;
- corrugated aluminium sheet;
- files (concrete or clay);
- reinforced concrete;
- timber shingles;
- slates;
- bituminous felt/roofing felt;
- bamboo;
- earth decking.
(c) (i) Types of floor are:
Based on material
(i) Solid floor/hollow floor (iv) Hollow timber floor;
(ii) Ground floor; OR (v) Reinforced concrete floor;
(iii) Suspended floor. (vi) Hollow pot floor.
(ii) Examples of each of the floor stated in c(i) are:
(i) solid floor: (1) reinforced concrete;
(2) mass concrete; ground.
(ii) ground floor: (1) mass concrete;
(2) suspended timber ground floor.
(iii) suspended floor: (1) reinforced concrete;
(2) wooden;
(3) hollow block/concrete floor.
