AS 2118 9 1995 automatic fire sprinkler systems piping sup

Title AS 2118.9-1995 Automatic fire sprinkler systems - Piping support and installation Licensee Licensed to LUU MINH LUAN on 25 Feb 2002 Conditions of use This is a licensed electronic copy of a document where copyright is owned or managed by Standards Australia International Your licence is a single user licence and the document may not be stored, transferred or otherwise distributed on a network You may also make one paper copy of this document if required Web Check-up Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited AS 2118.9—1995 Australian Standard Automatic fire sprinkler systems Part 9: Piping support and installation This Australian Standard was prepared by Committee FP/4, Standard Sprinkler Installations It was approved on behalf of the Council of Standards Australia on 13 March 1995 and published on July 1995 The following interests are represented on Committee FP/4: Australian Building Codes Board Australian Chamber of Commerce and Industry Australian Chamber of Manufactures Australian Construction Services, Department of Administrative Services Australian Fire Authorities Council Australian Fire Protection Association Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited Australian Water and Sewerage Authorities Commonwealth Fire Board CSIRO—Division of Building, Construction and Engineering Fire Protection Industry Association of Australia Institution of Engineers Australia Insurance Council of Australia Master Plumbers and Mechanical Services Association of Victoria Melbourne Water New Zealand Fire Equipment Association Telecom Australia The Association of Consulting Engineers Australia Review of Australian Standards To keep abreast of progress in industry, Australi an Standards are subject to periodic review and are kept up to date by the issue of amendments or new editi ons as necessary It is important therefore that Standards users ensure that they are in possession of the latest editi on, and any amendments thereto Full detail s of all Australi an Standards and related publications will be found in the Standards Australi a Catalogue of Publications; this information is supplemented each month by the magazine ‘The Australian Standard’, which subscribing members receive, and which gives detail s of new publi cati ons, new edit ions and amendments, and of withdrawn Standards Suggesti ons for improvements to Australian Standards, addressed to the head offi ce of Standards Australia, are welcomed Noti fi cati on of any inaccuracy or ambiguity found in an Australian Standard should be made without delay in order that the matter may be investigated and appropriate action taken AS 2118.9—1995 Australian Standard Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited Automatic fire sprinkler systems Part 9: Piping support and installation PUBLISHED BY STANDARDS AUSTRALIA (STANDARDS ASSOCIATION OF AUSTRALIA) THE CRESCENT, HOMEBUSH, NSW 2140 ISBN 7262 9756 AS 2118.9 — 1995 PREFACE This Australian Standard was prepared by the Joint Standards Australia/Standards New Zealand Committee on Automatic Sprinkler Installations, to supersede in part AS 2118 —1988, SAA Code for Automatic Fire Sprinkler Systems This Standard is the result of a consensus among representatives on the joint committee to produce it as an Australian Standard The revisions to AS 2118 include Standards Australia’s requirements to keep product and installation Standards separate When complete the series will comprise: Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited AS 2118 4118 Automatic fire sprinkler systems Part 1: Standard Part 2: Wall wetting sprinklers (Drenchers) Part 3: Deluge Part 4: Residential Part 5: Domestic Part 6: Combined sprinkler and hydrant Part 9: Piping support and installation Part 10: Approval documentation Fire Part Part Part Part Part Part Part Part Part sprinkler systems 1.1: Components — Sprinklers and sprayers 1.2: Components — Alarm valves (wet) 1.3: Components — Water motor alarms 1.4: Components — Valve monitors 1.5: Components — Deluge and pre-action valves 1.6: Components — Stop valves and non-return valves 1.7: Components — Alarm valves (dry) 1.8: Components — Pressure reducing valves 1.9: Components — Accelerators and exhausters Part 2.1: Piping — General Originated as part of AS CA16 — 1939 (endorsement of Seventh Edit ion of FOC Rules) Previous editi on AS 2118 — 1982 Revised and redesignated in part as AS 2118.9— 1995  Copyri ght STANDARDS AUSTRALIA Users of Standards are reminded that copyright subsists in all Standards Austr alia publi cati ons and software Except where the Copyri ght Act all ows and except where provided for below no publi cati ons or software produced by Standards Austr alia may be reproduced, stored in a retr ieval system in any form or transmitt ed by any means without prior permission in writ ing from Standards Australi a Permission may be conditi onal on an appropriate royalt y payment Requests for permission and informati on on commercial software royalt ies should be directed to the head offi ce of Standards Austr alia Standards Austr alia wil l permit up to 10 percent of the technical content pages of a Standard to be copied for use exclusively in-house by purchasers of the Standard without payment of a royalty or advice to Standards Austr alia Standards Austr alia wil l also permit the inclusion of it s copyright material in computer soft ware programs for no royalt y payment provided such programs are used exclusively in-house by the creators of the programs Care should be taken to ensure that materi al used is fr om the curr ent edit ion of the Standard and that it is updated whenever the Standard is amended or revised The number and date of the Standard should therefore be clearly identif ied The use of materi al in print form or in computer software programs to be used commercially, with or without payment, or in commercial contracts is subject to the payment of a royalty This policy may be vari ed by Standards Austr alia at any ti me AS 2118.9 — 1995 CONTENTS Page SECTION SCOPE AND GENERAL 1.1 SCOPE 1.2 NEW DESIGNS AND INNOVATIONS 1.3 REFERENCED DOCUMENTS 1.4 DEFINITIONS Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited SECTION SUPPORT OF SPRINKLER PIPING 2.1 GENERAL 2.2 DESIGN 2.3 CORROSION PROTECTION OF PIPE SUPPORTS 2.4 REQUIREMENTS FOR PIPE SUPPORT COMPONENTS 2.5 FIXING OF PIPE SUPPORTS 2.6 SPACING OF SUPPORTS 2.7 LOCATION OF SUPPORTS 2.8 VERIFICATION OF DESIGN 4 10 SECTION INSTALLATION — GENERAL 3.1 PIPE AND PIPE FITTING SPECIFICATIONS 3.2 HYDRAULIC TEST PRESSURE 3.3 EMBEDDING OF PIPING 3.4 CORROSION PROTECTION OF PIPING 3.5 PROTECTION OF PIPING AGAINST MECHANICAL DAMAGE 3.6 FACILITIES FOR FLUSHING PIPING 3.7 PROHIBITED USE OF PIPING 3.8 SLOPE OF PIPES FOR DRAINAGE 3.9 LOW LEVEL DRAINAGE 3.10 PIPE SIZES 3.11 SPACING OF BRACKETS AND CLIPS 14 14 14 14 15 15 15 15 15 15 15 SECTION INSTALLATION—STEEL PIPING 4.1 PIPE AND PIPE FITTING SPECIFICATIONS 16 4.2 PIPE JOINTING 16 SECTION INSTALLATION—LIGHTWALL STEEL PIPING 5.1 PIPE AND PIPE FITTING SPECIFICATIONS 17 5.2 PIPE JOINTING 17 SECTION INSTALLATION—COPPER PIPING 6.1 GENERAL 18 6.2 PIPE JOINTING 18 6.3 PIPE BENDING 18 SECTION INSTALLATION—PLASTIC PIPING 7.1 PIPE AND PIPE FITTING SPECIFICATION 7.2 PIPE AND FITTINGS—JOINTING 7.3 CORROSION PROTECTION OF PIPING 7.4 PIPE SIZES 19 20 20 20 AS 2118.9 — 1995 STANDARDS AUSTRALIA Australian Standard Automatic fire sprinkler systems Part 9: Piping support and installation S E C T I O N S CO P E A N D G E NE R A L 1.1 SCOPE This Standard specifies requirements for the support and installation of piping for fire sprinkler systems Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited 1.2 NEW DESIGNS AND INNOVATIONS Any alternative materials, designs, methods of assembly, and procedures that not comply with specific requirements of this Standard, or are not mentioned in it, but that give equivalent results to those specified are not necessarily prohibited The specified approval remains the prerogative of the regulatory authority 1.3 REFERENCED DOCUMENTS The following documents are referred to in this Standard: AS 1074 Steel tubes and tubulars for ordinary service 1167 Welding and brazing— Filler metals 1281 Cement mortar lining of steel pipes and fittings 1432 Copper tubes for plumbing, gasfitting and drainage applications 1516 The cement mortar lining of pipelines in situ 1530 1530.4 Methods of fire tests on building materials, components and structures Part 4: Fire-resistance test of elements of building construction 1538 Cold-formed Steel Structures Code 1579 Arc welded steel pipes and fittings for water and gas 1650 Hot-dipped galvanized coatings on ferrous articles 1674 Safety in welding and allied processes 1834 1834.1 1834.2 Material for soldering Part 1: Solder alloys Part 2: Flux-cored solders 1873 1873.1 1873.3 1873.4 Powder-actuated (PA) hand-held fastening tools Part 1: Selection, operation and maintenance Part 3: Charges Part 4: Fasteners 2118 2118.1 2118.4 2118.5 Automatic fire sprinkler systems Part 1: Standard Part 4: Residential Part 5: Domestic COPYRIGHT AS 2118.9 — 1995 AS 2484 2484.1 2484.2 Fire— Glossary of terms Part 1: Fire tests Part 2: Fire protection and firefighting equipment 2544 Grey iron pressure pipes and fittings 3500 3500.0 3500.1 National Plumbing and Drainage Code Part 0: Glossary of terms Part 1: Water supply 3688 Water supply— Copper and copper alloy body compression and capillary fittings and threaded end connectors 4041 Pressure piping 4118 4118.2.1 Fire sprinkler systems Part 2.1: Piping — General 1.4 DEFINITIONS For the purpose of this Standard, the definitions given in AS 2118.1, AS 2484.1, AS 2484.2, AS 3500.0 and those below, apply Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited 1.4.1 Lightwall pipe — a mild steel pipe with a nominal wall thickness less than that of medium wall thickness as specified in AS 1074 1.4.2 Pressed locked fitting— a formed steel pipe fitting designed to ensure water tightness by means of synthetic, rubber ‘o-ring’ seals Mechanical compression of the entire circumference of the fitting against the pipe forms a permanent engagement of the pipe and fitting 1.4.3 Regulatory authority — a Minister of the Crown, a government department, or other public authority having power to issue regulations, order, or other instructions in respect of any subject covered by this Standard 1.4.4 Roll grooved fitting— a formed ductile iron cast fitting designed to ensure watertightness by means of synthetic rubber gaskets The fitting housing is in two sections and fully encloses the gasket when assembled The housing engages around the full circumference of the roll grooved pipe end and is assembled using nuts and bolts ensuring engagement of the pipe and fitting 1.4.5 Slotted key locked fittings— a formed ductile iron cast fitting designed to ensure watertightness by means of synthetic rubber ‘o-ring’ seals The pipe when inserted into the fitting is mechanically held in place by a locking key The locking key, when driven through the slotted keyway fitting, deforms the pipe surface The locking key can be removed to demount and re-assemble the fitting COPYRIGHT AS 2118.9 — 1995 S E C T I O N S UP P O R T O F P I P I N G S P R I N K L E R 2.1 GENERAL When a pipe support system is being designed for a fire sprinkler system, consideration shall be given to the correct location of pipe supports and to— (a) the stresses and loads which may be imposed on the support system from all external causes including differential movement of the building structure and all internal causes including pressure reactions; (b) the transmission of vibration from the building to the piping and from the piping to the building; (c) the effect a corrosive atmosphere may have on the materials used; and (d) the isolation of the pipe from the support when unlike materials are used Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited 2.2 DESIGN requirements: Pipe supports shall comply with one or more of the following (a) They shall be designed, in accordance with AS 1538 or an equivalent Standard, to support twice the load due to water-filled piping plus a load of 115 kg at each point of support (b) They shall comply with the requirements of Clause 2.4 (c) For domestic sprinkler installation they shall comply with the requirements of AS 3500.1 (d) They shall be capable of supporting the appropriate test load shown in Table 2.8.1 2.3 CORROSION PROTECTION OF PIPE SUPPORTS Sprinkler piping supports installed in an aggressive environment shall be suitably protected against corrosion NOTE: In bleach, dye and textile print works, paper mills, tanneries and in other premises where there are corrosive conditions, pipe supports should be thoroughly cleaned and protected by suitable means, e.g two coats of good quality, bituminous paint, one coat being applied before and one after installation Although this treatment will materially lengthen the effective life of the pipes, it will probably be found necessary to renew the coatings from time to time at intervals from one year to five years according to the severity of the conditions As an alternative to the above treatment, galvanized pipe supports may be used 2.4 2.4.1 REQUIREMENTS FOR PIPE SUPPORT COMPONENTS (see Figure 2.4.1) Hook bolts The following requirements apply to the use of hook bolts: (a) Hook bolts shall be used for clamping down purposes only (b) Hook bolts shall not be threaded along their full length (c) Hook bolts shall not be used for piping exceeding 80 mm nominal internal diameter (d) Hook bolts shall conform to the following dimensions: millimetres Nominal pipe size Minimum nominal diameter of material ≤50 >50 ≤80 10 NOTE: The arms of hook bolts shall be located on alternate sides along a length of pipe COPYRIGHT 2.4.2 AS 2118.9 — 1995 U-bolts clamping down Shall conform to the following dimensions: millimetres Nominal pipe size Minimum nominal diameter of material ≤50 2.4.3 >50 ≤150 10 >150 ≤250 12 >250 ≤350 15 U-bolts clamping up and rods Shall conform to the following dimensions: millimetres Nominal pipe size Minimum nominal diameter of material Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited ≤50 2.4.4 U-hangers (clips) >50 ≤150 12 >150 ≤250 15 >250 ≤350 20 Shall conform to the following dimensions: millimetres Nominal size of material Nominal pipe size ≤40 1.6 × 25 >40 ≤65 × 25 >65 ≤150 × 30 2.4.5 Cantilever type supports, saddle brackets, girder or beam clamps designed in accordance with Clause 2.2(a) 2.4.6 Pipe bands requirements— (a) Shall be fabricated from material complying with the following for non-corrosive atmospheres as follows: millimetres (b) Shall be Nominal pipe size Minimum material thickness ≤100 >100 For corrosive atmospheres not less than mm thick COPYRIGHT AS 2118.9 — 1995 2.5.4 Fixing to steel Explosive-powered fasteners may be used for fixing pipe supports to steel provided that the steel is not less than mm thick The fixing shall be capable of supporting the design load as required in Clause 2.2(a) 2.6 SPACING OF SUPPORTS The distance between supports for horizontal and vertical sprinkler piping shall be in accordance with Table 2.6.1 In certain types of construction, in which the minimum spacing required cannot be achieved by supporting pipes from main structural members, provision shall be made to support the centre of the span A typical method is shown in Figure 2.5.1 TABLE 2.6.1 MAXIMUM SPACING OF PIPE SUPPORTS Maximum spacing of brackets and clips, m Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited Nominal pipe size (DN) 2.7 Plastic Copper and lightwall steel Galvanized steel and ductile iron Horizontal Vertical 20 22 25 1.50 – 2.00 4.00 – 4.00 0.70 0.70 0.75 1.40 1.40 1.50 32 40 50 2.50 2.50 3.00 5.00 5.00 5.00 0.85 0.90 1.05 1.70 1.80 2.10 63 65 75 – 3.00 – – 5.00 – 1.10 1.20 1.30 2.20 2.40 2.60 80 90 100 4.00 4.00 4.00 5.00 5.00 5.00 1.35 1.40 1.50 2.70 2.80 3.00 110 125 140 ≥150 – 4.00 – 4.00 – 6.00 – 6.00 1.50 1.70 1.70 2.00 3.00 3.40 3.40 4.00 LOCATION OF SUPPORTS 2.7.1 General Pipe supports shall be located such that they not obstruct the distribution of water from any sprinkler head 2.7.2 Change of direction A support shall be located not further than m from any change of direction in the piping, e.g bend or elbow 2.7.3 Range pipes Range pipes exceeding 500 mm in length shall have at least one support The first support on any range pipe shall be not more than m from the distribution pipe or riser (drop) The distance from the last support to the end of a range pipe shall not exceed the following: (a) For pipes ≤25 mm nominal diameter 1.0 m (b) For pipes >25 mm nominal diameter 1.5 m 2.7.4 Distribution pipes The first support on any distribution pipe shall be not more than m from the connection to the main distribution pipe The distance from the last support to the end of any distribution pipe shall not exceed m 2.7.5 Main distribution pipes The distance from the last support to the end of any horizontal main distribution pipe shall not exceed m COPYRIGHT AS 2118.9 — 1995 10 2.7.6 Risers Main vertical pipes rising (or dropping) from the installation valves, or for linking the piping between levels, shall be supported directly from the structure or by supports on horizontal branch piping from the riser not more than 300 mm from the riser 2.8 VERIFICATION OF DESIGN 2.8.1 General Supports which comply with Clause 2.2(b) shall be deemed to meet the requirements for sprinkler piping support systems NOTE: Where the support system is designed in accordance with Clause 2.2(a), details of the pipe supports proposed may be required by the regulatory authority for approval Where details submitted are considered to be inadequate, the regulatory authority may require a verification test, as specified in Clause 2.8.2 2.8.2 Verification test Where a verification test is required, pipe supports shall be capable of withstanding the following test without failure The appropriate load from Table 2.8.1 shall be applied without shock for a period not less than 30 s NOTE: This test is not intended for application in situ If applied in situ, appropriate safety precautions must be taken Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited TABLE 2.8.1 VERIFICATION TEST LOADS Pipe size mm Test load (nominal) kg ≤50 340 >50 ≤65 385 >65 ≤80 475 >80 ≤100 680 >100 ≤150 1200 >150 1750 COPYRIGHT 11 Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited (a) U-bolt AS 2118.9 — 1995 (b) Hook bolt (c) U-hanger (clip) (d) Canti lever type support illustr ating two typical applicati ons FIGURE 2.4.1 (in part) TYPICAL PIPE SUPPORT COMPONENTS COPYRIGHT AS 2118.9 — 1995 12 (i ) (i i) Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited (e) Gir der or beam clamp (f ) Saddle bracket, rod and pipe band FIGURE 2.4.1 (in part) TYPICAL PIPE SUPPORT COMPONENTS COPYRIGHT Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited 13 (g) Pipe support beam illustrati ng three typical applicati ons FIGURE 2.4.1 (in part) TYPICAL PIPE SUPPORT COMPONENTS FIGURE 2.5.1 TYPICAL METHOD OF SUPPORT FOR LONG SPAN COPYRIGHT AS 2118.9 — 1995 AS 2118.9 — 1995 S E C T I O N 3.1 14 I N S T AL L A T I O N — G E N E R A L PIPE AND PIPE FITTING SPECIFICATIONS 3.1.1 General All pipes and pipe fittings in an installation shall be new and shall comply with the relevant Standards listed in Clause 1.3 3.1.2 Pipes above ground requirements: Pipes above ground shall comply with the following (a) Section of this Standard for steel (b) Section of this Standard for lightwall steel (c) Section of this Standard for copper (d) Section of this Standard for plastic Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited 3.1.3 Pipes below ground Pipes below ground shall comply with the relevant Standards listed in Clause 1.3, subject to the approval of the water supply authority, and the following: (a) Section of this Standard for steel (b) Section of this Standard for lightwall steel (c) Section of this Standard for copper (d) Section of this Standard for plastic 3.1.4 Protection of underground pipes Underground pipes shall be protected against corrosion where necessary and shall not be laid in positions where they could be damaged by vehicular traffic 3.2 HYDRAULIC TEST PRESSURE All new installations, trunk mains and water supply connections shall be capable of withstanding, for a period of h, a hydraulic test pressure of 1.4 MPa, or 400 kPa in excess of the maximum static working pressure, whichever is the greater 3.3 EMBEDDING OF PIPING Sprinkler piping shall not be embedded in concrete floors or any other surfacing material of a building NOTE: Embedding of piping is prohibited for two principal reasons — (a) problems of corrosion; and (b) difficulties in making subsequent alterations to the pipe system 3.4 CORROSION PROTECTION OF PIPING Sprinkler piping installed in an aggressive environment shall be suitably protected against corrosion NOTE: In bleach, dye and textile print works, paper mills, tanneries and in other premises where corrosive conditions exist, piping should be thoroughly cleaned and protected by suitable means, e.g two coats of good quality, bituminous paint, one coat being applied before and one after erection Although this treatment will materially lengthen the effective life of the pipes, it will probably be found necessary to renew the coatings from time to time at intervals from one year to five years according to the severity of the conditions As an alternative to the above treatment — (a) galvanized pipes may be employed, provided that the threaded ends of the pipes are adequately sealed with a suitable protective coating, e.g bituminous paint; or (b) the pipes may be wrapped in a suitable protective tape COPYRIGHT 15 AS 2118.9 — 1995 3.5 PROTECTION OF PIPING AGAINST MECHANICAL DAMAGE Sprinkler piping shall be protected against mechanical damage NOTE: Sprinkler piping should not be erected in locations where it is liable to damage by forklift trucks and other mobile equipment; in particular, it should not cross gangways where such equipment is used unless the headroom is in excess of the height of the equipment concerned Where it is impracticable to avoid areas subject to such traffic, the piping should be protected by adequate guards Where installation valves or risers are situated in such areas, in addition to guardrails, safety guidelines should be marked out 3.6 FACILITIES FOR FLUSHING PIPING Where the water supplies include an automatic pump drawing from a source of non-potable water such as a canal, river or lake, flushing connections shall be provided at the extremities of distribution pipes 3.7 PROHIBITED USE OF PIPING 3.7.1 Electrical earth Sprinkler pipes shall not be used as a means of earthing an electrical installation or as a link in an earthing circuit Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited 3.7.2 Hoisting Sprinkler pipes shall not be used for hoisting or supporting other services nor shall articles be from them 3.8 SLOPE OF PIPES FOR DRAINAGE Sprinklers forming part of dry or alternate wet and dry, and deluge systems shall be so installed that the system can be thoroughly drained Range pipes shall have a slope of not less than mm in m, and distribution pipes shall have a slope not less than mm in m NOTE: Piping in all systems including wet systems should be arranged to drain to the installation drain valve which should be not less than 50 mm in diameter for ordinary and high hazard systems and not less than 40 mm in diameter for light hazard systems 3.9 LOW LEVEL DRAINAGE In basements and other areas where sprinkler piping is below the installation drain valves and in other trapped sections in the systems, auxiliary drain valves of the following minimum sizes shall be provided: (a) For pipes up to 50 mm diameter 20 mm (b) For 65 mm diameter pipes 25 mm (c) For pipes larger than 65 mm diameter 32 mm 3.10 PIPE SIZES Pipe size shall be determined either by full hydraulic calculation, or partly from precalculated pipe size tables and partly by hydraulic calculations in accordance with the requirements for the class of hazard 3.11 SPACING OF BRACKETS AND CLIPS accordance with Table 2.6.1 COPYRIGHT Brackets and clips shall be spaced in AS 2118.9 — 1995 S E C T I O N 4.1 16 I N S T AL L A T I O N — S T E E L P I P I N G PIPE AND PIPE FITTING SPECIFICATIONS 4.1.1 General All pipes and pipe fittings in an installation shall be new and shall comply with the relevant Standards listed in Clause 1.3 4.1.2 Pipes above ground Pipes above ground shall be at least equivalent to medium steel tube complying with the requirements of — (a) AS 1074; or (b) AS 1579, subject to a minimum thickness of 4.76 mm; or (c) AS 4041 Pipes above ground and downstream of the main control valve shall be at least equivalent to medium grade black steel in accordance with the requirements of the foregoing paragraph Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited 4.1.3 Pipes below ground Pipes below ground shall comply with the relevant Standards listed in Clause 1.3, subject to the approval of the water supply authority Cast iron pipes and fittings complying with AS 1724 and AS 2544 shall be coated and cement mortar lined in accordance with AS 1281 or AS 1516 Pipes complying with AS 1074 and AS 1579 shall be subject to a minimum wall thickness of 5.3 mm 4.2 PIPE JOINTING 4.2.1 Welded joints Only pipes of 50 DN or greater may be jointed by welding unless the joints are fabricated, welded and inspected in the workshop On-site welding operations shall be avoided as far as possible, but if unavoidable they shall be carried out in accordance with AS 1674 NOTE: Where galvanized pipe on the supply side of the main control valve is welded, the water supply authority may require the galvanized finish to be made good 4.2.2 Roll grooved fittings Pipes may be joined by roll grooved fittings as defined in Clause 1.4.4 COPYRIGHT 17 S E C T I O N 5.1 AS 2118.9 — 1995 I N S T AL L A T I O N — L I GH T W A L L S T E E L P I P I NG PIPE AND PIPE FITTING SPECIFICATIONS 5.1.1 General All pipes and pipe fittings in an installation shall be new and shall comply with the relevant Standards listed in Clause 1.3 and with the requirements and limitations stipulated in the listing criteria 5.1.2 Pipes above ground Pipes with a nominal wall thickness of less than 2.0 mm may only be installed above ground and downstream of any main control or isolating valve Where lightwall pipes installed above ground are required by other Standards, water authorities, or are in corrosive environments, they shall be galvanized and the galvanizing shall comply with the requirements of AS 1650 5.1.3 Pipes below ground All lightwall pipe installed below ground shall be hotdipped galvanized in accordance with the requirements of AS 4118.2.1 Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited All fittings for installation below ground shall be hot-dipped galvanized in accordance with the requirements of AS 1650 Where pipe and fittings are installed below ground and additional protection is required it shall be provided in accordance with the requirements of AS 4118.2.1 5.2 PIPE JOINTING 5.2.1 Welded joints The fabrication of lightwall steel pipes shall be limited by the requirements of AS 4118.2.1, Section 5.2.2 Fittings and other pipe joining methods Only fittings and mechanical pipe joining methods complying with the requirements of AS 4118.2.1 shall be used 5.2.3 Fittings Fittings shall be dimensionally compatible with the pipe and shall only be used with a pipe for which they were specifically designed, approved and listed COPYRIGHT AS 2118.9 — 1995 S E C T I O N 18 I N S T AL L A T I O N — C O P P ER P I P I N G 6.1 GENERAL All pipes and pipe fittings in an installation shall be new and shall comply with the relevant Standards listed in Clause 1.3 Copper piping shall be laid in accordance with the requirements of relevant sections of AS 3500 and shall only be used in wet fire sprinkler systems as defined in AS 2118.1 for hazard classifications up to OH3 Special, AS 2118.4 and AS 2118.5 6.1.1 Pipes above ground Copper piping above ground shall be at least equivalent to Type ‘B’ tube complying with the requirements of AS 1432 6.1.2 Pipes below ground Copper pipes below ground shall be installed in compliance with the requirements of AS 3500.1 for the installation of water supplies Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited 6.2 PIPE JOINTING 6.2.1 Brazing Joints in copper piping, or between copper piping and fittings, shall be silver brazed, except that solder may be used when the fitting is designed for that purpose Silver brazing filler materials shall conform to Types B2, B3 or of AS 1167 Solder shall be either in tin-antimony or tin-silver to AS 1834 On-site brazing or soft soldering shall be carried out in accordance with AS 1674 NOTE: Where dissimilar metals are joined, care must be taken to insulate copper piping to prevent bimetallic corrosion 6.2.2 Soft-soldered joints The use of soft-soldered joints is permitted for wet residential and domestic sprinkler systems and light hazard and ordinary hazard occupancies (see AS 2118 Parts 1, and 5) where piping is concealed within ceiling or void spaces 6.2.3 Manipulated joints A manipulated joint is one in which the copper pipe is deformed to form sockets or branches into which other pipes are connected The deformation of the piping to form the joint shall only be effected using the appropriate tools Joints formed in this manner shall only be silver-brazed Means shall be provided to prevent the branch pipe from intruding into the bore of the main pipe while maintaining the joint close contact 6.2.4 Capillary fittings Capillary fittings shall be manufactured and used in accordance with AS 3688 with the exception that only the listed solder and brazing materials are used 6.2.5 Compression fittings Compression fittings shall be manufactured, using the dimensions and materials set out in AS 3688 6.3 PIPE BENDING Copper piping may be bent, provided that there are no kinks, ripples, distortions, reduction in diameter or any noticeable deviation from round The minimum radius of a bend shall be pipe diameters for pipe sizes of 50 DN and smaller and pipe diameters for pipes of 65 DN and larger COPYRIGHT 19 S E C T I O N 7.1 AS 2118.9 — 1995 I N S T AL L A T I O N — P L A S T I C P I P I N G PIPE AND PIPE FITTING SPECIFICATION 7.1.1 General This Section specifies requirements for the use of plastic piping for wet fire sprinkler systems Use of plastic piping in fire sprinkler systems is limited to the following: (a) Residential systems to AS 2118.5 (b) Domestic systems to AS 2118.4 (c) Light Hazard systems to AS 2118.1 and the mechanical, service and related storage areas of these occupancies that are defined as Ordinary Hazard (OH1) All pipes and pipe fittings in an installation shall be new and shall comply with the requirements of AS 4118.2.1 and the requirements and limitations of any listing criteria Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited Only straight lengths of pipe are approved for installation according to this Standard, the use of coiled pipe is not approved All fittings designed to take a male metal thread shall incorporate a female metal thread insert and a metal reinforcing ring to provide a high strength, heavy duty fitting Typical installation methods for plastic pipe are shown in Figures 7.1 to 7.6 7.1.2 Pipe and fittings above ground This Standard assumes that plastic pipe and fittings will be fully enclosed by walls, ceiling or other closed architectural structures of the building to be protected The only permitted exposure to the room being protected is at the connection to the sprinkler and only if the configuration has been shown to satisfactorily pass the test in AS 4118.2.1 Where plastic pipe is used in non-protected areas of buildings, no pipe or fitting shall project above ground or pass through any element of the building structure unless it is adequately protected from structural damage as per Clauses 3.6 and 3.7 7.1.3 Pipes and fittings below ground Pipes and fittings laid underground shall comply with the relevant Standards listed in Clause 1.3 subject to the approval of the water supply authority Approved plastic pipe and fittings shall be laid in accordance with the requirements of AS 3500.1 for water supply installation 7.1.4 Installation restrictions Plastic pipe and fittings shall not be installed close to any heat-producing sources such as light fixtures, ballasts, heat ducts and steam pipes, unless the pipe is derated for such heat sources as indicated in the relevant Standard given in Clause 7.1.1 Plastic pipes and fittings shall not be installed in areas where the maximum ambient temperature exceeds 50°C unless performance at higher temperatures is guaranteed by the manufacturer Where thermal expansion or contraction forces are expected due to significant variations in temperature, these forces shall be allowed for by the installation of sufficient expansion joints, or by other suitable methods as recommended by the manufacturer Where building refurbishing occurs, steps must be taken to properly protect plastic pipework from fire exposure if the concealment material is temporarily removed COPYRIGHT AS 2118.9 — 1995 20 7.1.5 Fire rating In accordance with Clause 7.1.2 walls, ceilings or other closed architectural structures shall have at least an FRL of 30/30/- when tested in accordance with AS 1530.4 NOTE: For the purposes of this Standard, 12 mm gypsum wallboard shall be deemed to have an FRL of 30/30/- 7.1.6 Pipe storage Most plastic pipes are susceptible to ultraviolet attack when stored out of doors Unless specified by the manufacturers as being suitable for continuous outdoor exposure, plastic pipes shall be stored under cover 7.2 PIPE AND FITTINGS— JOINTING 7.2.1 Jointing Pipework may be joined by either solvent cementing in accordance with the manufacturer’s instructions, with screwed or mechanical joints, crimp type fittings or by heat fusion If screwed joints are used then the presence of the screw thread must not reduce the effective wall thickness below that of the pipe Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited 7.2.2 Threaded connections connections A thread sealant shall be used in making threaded NOTE: PTFE (Teflon) tape is the recommended sealant and shall be used with all threaded connections Some thread pastes contain solvents and may be damaging to plastic pipes They are therefore NOT recommended for use with plastic pipes Maximum tightening torque for threaded connections should not exceed 35 Nm 7.3 CORROSION PROTECTION OF PIPING Metallic piping used in conjunction with plastic sprinkler pipework installed in an aggressive environment shall be suitably protected against corrosion NOTE: Piping should be thoroughly cleaned and protected by suitable means, e.g two coats of good quality, bituminous paint, one coat being applied before and one after erection While this treatment will effectively lengthen the effective life of the pipes, it will probably be found necessary to renew the coatings from time to time at intervals from to years according to the severity of the conditions As an alternative to the above treatment — (a) galvanized pipes may be used, provided that the threaded ends of the pipes are adequately sealed with a suitable protective coating, e.g bituminous paint; or (b) the pipes may be wrapped in a suitable protective tape 7.4 PIPE SIZES Pipe sizes shall be determined hydraulically, partly by pre-calculated pipe size tables and partly by hydraulic calculations in accordance with the requirements for the class of hazard COPYRIGHT Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited 21 AS 2118.9 — 1995 FIGURE 7.1 TYPICAL SUSPENDED CEILING INSTALLATION USING CONCRETE ANCHOR WITH ADJUSTABLE HANGER AND ROD, FOR RIGID PLASTIC PIPE FIGURE 7.2 TYPICAL SUSPENDED CEILING INSTALLATION USING SADDLE CLAMP FIXING TO ROOF TRUSSES, FOR RIGID PLASTIC PIPE COPYRIGHT Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited AS 2118.9 — 1995 22 FIGURE 7.3 TYPICAL FIXED CEILING INSTALLATION USING ‘EARED’ SPRINKLER FITTINGS, FOR RIGID PLASTIC PIPE FIGURE 7.4 TYPICAL SUSPENDED CEILING INSTALLATION USING PIPE SUPPORT AND GUIDE/CLAMP FOR RIGID PLASTIC PIPE COPYRIGHT Licensed to LUU MINH LUAN on 25 Feb 2002 Single user licence only Storage, distribution or use on network prohibited 23 FIGURE 7.5 TYPICAL INSTALLATION USING SADDLE CLIPS, FOR FLEXIBLE PLASTIC PIPE FIGURE 7.6 TYPICAL INSTALLATION USING SADDLE CLIPS AND LATERAL SUPPORTS, FOR FLEXIBLE PLASTIC PIPE COPYRIGHT AS 2118.9 — 1995 ... wet fire sprinkler systems Use of plastic piping in fire sprinkler systems is limited to the following: (a) Residential systems to AS 2118.5 (b) Domestic systems to AS 2118.4 (c) Light Hazard systems. .. was prepared by the Joint Standards Australia/Standards New Zealand Committee on Automatic Sprinkler Installations, to supersede in part AS 2118 —1988, SAA Code for Automatic Fire Sprinkler Systems. .. prohibited AS 2118.9—1995 Australian Standard Automatic fire sprinkler systems Part 9: Piping support and installation This Australian Standard was prepared by Committee FP/4, Standard Sprinkler