Most candidates were able to:

            -           define the given terms used in stair construction;
            -           state the functional requirements of a roof.          

However, they were unable to use sketches to illustrate the methods of fixing a baluster to the tread of a concrete stair. 

The expected response to question 2 is as given below:

(a)       (i)         Pitch is the angle of inclination of a stair to the horizontal.

(ii)        Headroom is the minimum free space recommended for easy passage of people, furniture and goods.  It is measured 2 metres vertically from the line of nosing of a stair to the soffit of stair, landing or floor above it.

(iii)       Waist is the effective thickness of the inclined slab that forms a flight of stair, measured from the junction of tread and riser to the stair’s soffit.

(iv)       Flight consists of a series of uninterrupted steps between a floor and a landing or between two landings.

 

 

           

 

            (c)        Functional requirements of a roof

                        -           Fire resistance
                        -           Thermal insulation
                        -           Aesthetics
                        -           Rainwater exclusion
                        -           Durability.