The objective of this Standard is to provide material and performance requirements for manufacturers and purchasers of plastics maintenance shafts, maintenance chambers and maintenance holes for sewerage and sanitary drainage systems. Maintenance shafts, maintenance chambers and maintenance holes complying with this Standard may also be suitable for other applications such as stormwater drainage.
This Standard adopts the same means of determining structural integrity of maintenance shafts, maintenance chambers and maintenance holes and durability of materials as ISO 13272.
This Standard adopts the same means of determining structural integrity of maintenance shafts, maintenance chambers and maintenance holes and durability of materials as ISO 13272. The elastomeric seal joint requirements are similar to ISO 13272 except that the base-to-pipe and base-to-riser joints are required to additionally comply with interface pressure and contact width as specified in, for example, AS/NZS 1260 and the infiltration/exfiltration test pressures are higher.
The plastics materials covered by this Standard include PVC-U, PE, PP and PP-MD. This document recognises that materials demonstrated to comply with the requirements of some AS/NZS and ISO Standards are suitable for the manufacture of maintenance shaft risers and/or bases, provided the structural integrity and durability requirements are satisfied. Other PVC-U, PE, PP or PP-MD materials need to satisfy additional durability requirements in order to demonstrate suitability. Maintenance shaft, maintenance chamber and maintenance hole bases are typically manufactured by injection moulding, rotational moulding or fabrication.