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6 marksCarpentry: Roofs, Doors, Windows and Stairs

CSEC Industrial Technology · 2018 · Paper 2 · Question 2(a)

Figure 2 shows the floor plan for a single-storey dwelling house with gable and hipped ends, and a roof extending 300 mm beyond the external wall.

On page 9 produce, using a neat single line diagram, a roof framing plan of the hipped end of the roof in Figure 2 to show any FOUR of the following roof members: (i) Hip rafter (ii) Ridge board (iii) Crown/principal rafter (iv) Jack rafter (v) Fascia board (Note: Only the outline of the external walls is required for this part of the question.)

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Other parts of this question

  1. 2(b)(i)State the purpose of the ridge board in the design of the roof in Figure 2 on page 8.[2 marks]
  2. 2(b)(ii)Name FOUR types of roof coverings that are suitable for the roof in Figure 2.[4 marks]
  3. 2(b)(iii)Use a suitably labelled sketch to show how a common rafter should be fixed to the wall plate.[3 marks]
  4. 2(c)If the total rise of the roof in Figure 2 is 1.5 m, calculate the actual length of the common rafter. (Note: You are required to list the formula and show…[3 marks]

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