Question 4
(a) State five functions of plaster in a building.
(b) Sketch a pictorial view of each of the following:
- quartering guage;
- guage box.
(c) List two materials used in the manufacture of cement.
Observation
Most candidates were able to:
- sketch the gauge box correctly;
- state functions of plaster in building.
However, few of them failed to:
- sketch the quartering gauge;
- list two materials used in the manufacture of cement.
The expected response to question 4 is as given below:
4 (a) Five functions of a plastering:
- to exclude moisture;
- to provide hard wearing surface;
- to improve thermal insulation;
- to improve sound insulation;
- to provide for decoration;
- provides suitable background for other finishes.
(c) Materials used in the manufacture of cement:
- limestone or chalk;
- clay or shale;
- gypsum.