1.1 This standard applies to the following classes of precast unreinforced and reinforced circular pipes manufactured from portland cement concrete and intended for the conveyance of water, sewage and other liquid wastes:
(a) Drainage pipes
Class C Unreinforced
Class S Standard reinforced
Class X Extra strength reinforced
Class Y Special strength reinforced
Class Z Special strength reinforced
(b) Pressure pipes
Class P Pressure pipes reinforced to withstand specified hydrostatic test head
1.2 Where any other standard named in this standard has been declared or endorsed in terms of the Standards Act 1965, then -
(a) Reference to the named standard shall be taken to include any current amendments declared or endorsed in terms of the Standards Act 1965; or
(b) Reference to the named standard shall be read as reference to any standard currently declared or endorsed in terms of the Standards Act 1965 as superseding the named standard, including any current amendments to the superseding standard declared or endorsed in terms of the Standards Act 1965.
NOTE - The date at which amendments or superseding standards are regarded as "current" is a matter of law depending upon the particular method by which this standard becomes legally enforceable in the case concerned. In general, if this is by contract the relevant date is the date on which the contract is created, but if it is by Act, regulation, or bylaw then the relevant date is that on which the Act, regulation, or bylaw is promulgated, for bylaws, promulgation includes updating by the procedure set out in MP 3801*.
NZS 3107:1978 history
1978NZS 3107:1978 PRECAST CONCRETE DRAINAGE AND PRESSURE PIPES