Click herefor instructions on How to Print a Web Page
Fire Sprinklers
Terminology
Supports
Pipe supports must be located so they do not obstruct the distribution of water from any sprinkler head.
Range pipes exceeding 500mm in length in accordance with Clause 2.7 of AS2118.9 must have:
At least 1 support, and if longer at not more than 2m from the riser dropper or distribution pipes.
A distance from the last support to the end of a range pipe not exceeding:
<25 mm nominal diameter - 1.0m
>25 mm nominal diameter - 1.5m
Distribution pipes in accordance with Clause 2.7 of AS2118.9 must have:
Support within 1m from the end and not more than 2m from the main distribution pipe.
A distance from the last support to the end of any distribution pipe not exceeding 1m.
Distribution pipes in accordance with Clause 2.7 of AS2118.9 must have:
A support located not further than 1m from any change of direction.
Main vertical pipes rising (or dropping) from the installation valves, or linking the piping between levels, in accordance with Clause 2.7 of AS2118.9 must be:
Supported directly from the structure.
Supported on horizontal branch piping from the riser not more than 300mm from the riser.
Pipes must be supported in accordance with spacing in Table 2.6.1 of AS 2118.9 (outlined in horizontal pipe support spacing).
Testing
Fire sprinklers must be tested in accordance with Clause 7.9 pf AS 2118.1 by undertaking a:
Hydrostatic test pressure of 1600 kPa, or 400 kPa in excess of the maximum static working pressure (whichever is the greater) for a period of 2 hours.
Pneumatic pressure tests of 300kPa for period of 30 minutes with no more than 10% loss of the starting pressure, with a 10 min temperature normalising period prior to the starting pressure reading.
Protection
Sprinkler heads must be protected with guards in areas where sprinkler heads may be knocked.
Seismic
Seismic restraints/bracing in accordance with AS1170.4 - 2007 must be:
Detailed and installed as per approved shop drawings.
Installed for the following fire services:
Fire and smoke detection systems
Fire suppression systems (including sprinklers)
Life safety system components
Suspended reticulated services 65mm in diameter above, installed 300mm or lower below the fixed point to the structure.
Separation between restrained and unrestrained services must be in accordance with the table below.