QUESTION 2
(a)  Describe how pipes in a large underground water main are prevented from moving at bends and
junctions.
(2 marks)

(b)  State THREE requirements that must be met when a water main is run in a trench with other
services.
1
2
3
(3 marks)

(c)  State THREE requirements that must be met for the trenching and back-filling of a UPVC water
main.
1
2
3
(3 marks)

Total 8 marks

Linkback: https://forum.plumbers.nz/plumbing-exam-2006/19/question-2/142/