building construction Paper 2 WASSCE (SC), 2016

Question 2

  • (a)        State one duty of each of the following personnel on a construction site:

    1. clerk of works;
    2. general foreman.

     

    (b)        Use a sketch to illustrate a suitable profile for setting out a square pillar.

    (c)        Explain the use of each of the following earth moving equipment:

    1. bulldozer;
    2. scraper;
    3. grader.
  • Observation

    A good number of candidates were able to:

    -           illustrate with sketches a suitable profile for setting out a square pillar;
    -           explain correctly the use of the earth moving equipments.

    However, many of them failed to:

    -           state the duty of clerk of works and general foreman on a construction site.
    The expected response to question 2 is as given below:
    2 (a)     One duty of each of the following personnel on a construction site:

               (i)   Clerk of works is responsible for:

    (1)        checking stock of materials tools and equipment;
    (2)       checking spot levels and (accuracy) of setting out;
    (3)        testing of materials to ensure that they comply with standards approved by the architect;
    (4)        report progress of work to the architect;
    (5)        labour attendance records;
    (6)        checking quality of materials and workmanship comply with standards.

    (ii)        General Foreman:

    (1)        he is responsible for the orderly progress of the site work;
    (2)        he supervises the tradesmen under him;
    (3)        he passes on information from the contractor to the workmen.        

    (b)        (i)

     

    (ii)

     

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    (c)        (i)         Bulldozer:
    1.         It is used for clearing trees, shrubs and weeds.

    2          It is used for shallow excavations up to 300mm deep.

                3.         It is used for pushing excavated earth.         

    (ii)        Scraper:
    1.         Is used for cutting and removing excavated soil.
    2.         It is used for site surface stripping and haulage of the loose earth to a disposal point.

    (iii)       Grader:
    1.         It is used to finish the upper surface of a large area. 
    2.         It is used also as a follow up operation to a bulldozer or scrapper.