Masterspec

UPDATES TO STANDARDS ON POLYETHYLENE (PE) PIPES & INSULATION

20 Dec 2018

POLYETHYLENE (PE) PIPES

AS/NZS 4130:2018 Polyethylene (PE) Pipes For Pressure Applications, which covers fluids (includes water) and gas pipe specifications, has superseded AS/NZS 4130:2009 of the same name. However AS/NZS 4130:2009 is cited in NZBC E1/AS1, G12/AS1, G13/AS2 and G14/VM1, so for now remains part of the AS's and VM's. AS/NZS 4130:2018 would be an Alternative Solution.

AS/NZS 4130:2018, like the old version, provides among other things information on the compound types (80PE or 100PE) relative to nominal pressure rating (PN) and size (diameter and wall thickness). The changes from the old version largely consist of a reorganisation of the tables listing these attributes. This revision deletes the separate Series 2 gas pipes dimension Table 3, and amalgamates the Series 2 pipes into the Series 1 dimension Table 2. The various tables are correspondingly renumbered throughout the Standard. For clarity, the terminology Series 3 has been retained.

Installation of Polyethylene pipes for fluids is to AS/NZS 2033 and for gas to AS/NZS 4645.

Masterspec will continue to refer to the 2009 version as long as it is cited in the Code.

THERMAL INSULATION

AS/NZS 4859.1:2002 Materials For The Thermal Insulation Of Buildings - General Criteria And Technical Provisions, has been split up and superseded by two new Standards, AS/NZS 4859.1:2018 Thermal Insulation Materials For Buildings - General Criteria And Technical Provisions, and AS/NZS 4859.2:2018 Thermal Insulation Materials For Buildings - Design. However AS/NZS 4859.1:2002 is cited in NZBC H1/AS1, so for now remains part of the Acceptable Solution. AS/NZS 4859.1:2018 and AS/NZS 4859.2:2018 would be Alternative Solutions.

All of these Standards set out the requirements for manufacturers and suppliers of insulation, defining performance criteria and how to calculate and demonstrate that performance. In other words how they get to the concise R - values of insulation that you use. The new changes update some of the thermal insulation products particularly rigid foams.

Although these Standards contain some detailed R - value calculations for manufacturers and suppliers, the main Standard (among others) for building designers to calculate their building R - values is NZS 4214:2006 Method Of Determining The Total Thermal Resistance Of Parts Of Buildings.

Masterspec will continue to refer to AS/NZS 4859.1:2002 version as long as it is cited in the Code.


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