Plumbers' technical note – Inspection shafts and gully risers
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This technical note is to advise the plumbing industry that all vertical risers used for inspection purposes as well as risers from gully traps shall rise vertically and not contain offsets of any kind. This is a requirement of the Plumbing Code of Australia ‘Deemed to Satisfy Provisions’, AS/NZS 3500.2003, Part 2, Sanitary plumbing and drainage.
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