Question 3
(a) list five floor finishes.
(b) state five stages involved in laying a cement-sand screed on a concrete floor slab using a ready-mixed mortar.
Observation
Majority of the candidates were able to list the five floor finishes;
However, they failed to state five stages involved in laying a cement-sand screed on a concrete floor slab using a ready mixed mortar.
The expected response to question 3 is as given below:
(a) Five floor finishes are:
(i) screed
(ii)ceramic tile
(iii)pvc tile
(iv)clay tile
(v)terrazzo
(vi)mosaic floor finish ( wood, concrete)
(vii)timber flooring ( wood block, T & G boarding ).
(b) Five stages involved in laying a cement sand screed:
(i) provide a key to the concrete surface;
(ii) remove debris and make damp;
(iii) establish the required screed thickness with mortar dab at predetermined points
(iv) spread the mortar in between the established mortar dabs;