Most candidates were able to:
state the function of the given type of walls;
list types of doors in relation to the method of opening.
However, few of them were unable to:
sketch a two-panel door correctly;
describe a method of stopping a leakage around a roof nail in an 'existing aluminium ridge cap.
The expected response to question 3 is as given below:
(a)Function of each of the following walls:
(i)Partition wall is an internal wall which divides a building into rooms or spaces.  
(ii)Cavity wall is a wall built into two leaves with a 50mm-75mm airspace between the two leaves of wall provides thermal insulation and barrier to moisture penetration into the building.   
(b)Types of doors in relation to method of opening.
They are:
(i)Sliding door.
(ii)Folding ~ Sliding door.
(iii)Swinging door.
(iv)Revolving door.
(v)Roller-Shutter door.