building construction Paper 2 Nov/Dec 2015

Question 4

    1. a)            List three roof covering materials.

          b)   Sketch in line diagram, each of the following types of roof:
    (i)         monopitch roof;
    (ii)         lean-to roof.                                                                                                      
    c)   Use a sketch to illustrate how the air test is conducted on a drain line.

  • Observation

    Most of the candidates were able to:

    • list three materials used in roof covering.
    • sketch in line diagram monopitch roof and lean-to-roof.
    •  sketch how the air test is conducted on a drainline.

    However, the candidates failed to label the sketch of how the air test is conducted on a drainline.
    The expected response to question 4 is as given below:

    • (a)        Roof Covering Materials:
    • galvanised iron sheets;
    • aluminuim roofing sheet;
    • clay roof tiles;
    • palm fronds;
    • bamboo;
    • wood shingles;
    • asbestos cement roofing sheet;
    • concrete roof tiles.

      

     

     

     

     

     

       (b)                                 

    (c)