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QUESTION 1
(a) State the main purpose of an overflow relief gully.
(1 mark)
(b) From your knowledge of AS/NZS 3500 Part 2: Sanitary plumbing and drainage, list FOUR
locations where overflow relief gullies must be positioned.
1
2
3
4
(4 marks)
(c) Prior to the excavation of trenches, certain precautionary actions should be considered with
regard to safety. List FIVE such precautions.
1
2
3
4
5
(5 marks)
Total 10 marks
Question 1a) As relief in the event of sewage surcharge.
b) within the boundaries of the property
external to a building
so that the top of the gully is accessible and positioned where any discharge will be noticeable
with clear access for more than 2m above the top of the gullygrate and not be enclosed
c)