QUESTION 7
The diagram below shows a plan view of a hipped roof.

Please see PDF file for picture.

(a)  Calculate the area of the roofing material required to cover the roof.
(2 marks)

(b)   Each sheet of roofing material used to cover the roof has an effective cover of 762mm.
Calculate the minimum number of sheets of roofing material required to cover the roof.
(2 marks)

6.100m
Sheet length
3.660m
6.100m
12.200m

(c)   Calculate the total length of ridging needed for the roof, including the hips. Allow an extra
7.5% for laps and wastage.
(4 marks)

(d)  Roofing materials costs are as follows:
 Corrugated roofing material $9.20 per lineal metre.
 Ridging $13.30 per lineal metre.
  Calculate the net cost of the roofing materials. Allow an additional 22% for fixings 
and sundries.
(4 marks)

Total 12 marks

Linkback: https://www.plumbers.nz/plumbing-exam-june-2008/22/question-7/116/