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Building Construction Paper 2,May/June 2009  
Questions:   1 2 3 4 5   Main
General Comments
Weakness/Remedies
Strength

Question 3

(a) Sketch a longitudinal section through a straight flight timber staircase and label the following parts:

  1. newel post;
  2. string;
  3. tread;
  4. line of nosings.

(b) State in sequence; the five stages involved in fixing a hardwood door frame to a sandcrete blockwall while the walling is in progress.     

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OBSERVATION

Most candidates were able to:

  • sketch the longitudinal section through a straight flight timber staircase;
  • label the staircase correctly.

However, few candidates failed to:

  • sketch the straight flight timber staircase;
  • state in sequence, the stages in fixing a hardwood door frame to a sandcrete blockwall;

The expected response to question 3 is as given below:

(a)        Sketch of straight flight timber staircase and labelling of parts.

(b)        The five stages involved in fixing a door frame to a sandcrete blockwall while the walling is in progress are:

  • lay first course of blocks to the place where the frame is to be fixed;
  • place and support the frame in position;
  • check the vertical and horizontal alignment of the frame and brace firmly in position;
  • place fixing lugs on the frame to match the location of mortar beds;
erect blockwork at both sides of the frame to complete the walling operation to the lintel level.
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