<?xml version="1.0" encoding="UTF-8" standalone="no"?><?Xpress productLine="ncc-clause" ?><clause id="_c290c0b5-ed3f-46d6-b637-8b62ef0d0b91" outputclass="ncc-clause"><meta><facet building="Class 1a"/><facet building="Class 1b"/><facet building="Class 10a"/><facet building="Class 10b"/><facet building="Class 10c"/></meta><sptc>S13C3</sptc><title id="_7816b245-202a-4141-bae6-77c8cf3ed664">Metal pipe systems</title><archive-num>2019: Spec C3.15: 3</archive-num><subclause id="_9106418e-69e3-427d-acd9-1b49ac73fd48" outputclass="subclause"><title id="_450c06aa-c99e-4cbd-b4c3-0d2d5c46926e">SubClause</title><num>1</num><p>A pipe system comprised entirely of metal (excluding pipe seals or the like) that is not normally filled with liquid must not be located within 100 mm, for a distance of 2 m from the penetration, of any <xref format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/1221_0.9.0.xml#_a7b1bb43-dc94-41fb-9e49-6a37f0d6b236" id="_28e8845b-d44e-42cd-874f-63b31e73a1d3" scope="local" type="abcb-glossentry">combustible</xref> building element or a position where <xref format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/1221_0.9.0.xml#_a7b1bb43-dc94-41fb-9e49-6a37f0d6b236" id="_583bf07f-9c73-4e31-812c-4045fda7f2bd" scope="local" type="abcb-glossentry">combustible</xref> material may be located, and must be constructed of—</p><ol outputclass="alpha"><li id="_d76ac681-4628-46ae-b6b0-a4cd713a87e7">copper alloy or stainless steel with a wall thickness of at least 1 mm; or</li><li id="_a2977f1a-651e-412b-b90a-aee414ba484f">cast iron or steel (other than stainless steel) with a wall thickness of at least 2 mm.</li></ol></subclause><subclause id="_35f986ad-4304-47b3-af87-9f03065e0e5f" outputclass="subclause"><title id="_fe682e40-1b52-4e2c-8043-c0246d5cbfe0">SubClause</title><num>2</num><p>An opening for a pipe system comprised entirely of metal (excluding pipe seals or the like) must—</p><ol outputclass="alpha"><li id="_961fcc2b-7256-4981-8a26-cc38bf7ad66b">be neatly formed, cut or drilled; and</li><li id="_c37c0748-24d4-4ff0-baa1-115b1182a627">be no closer than 200 mm to any other service penetration; and</li><li id="_b81ca4a2-5c39-4763-a93a-923f1b826ce6">accommodate only one pipe.</li></ol></subclause><subclause id="_eefbb203-44a6-4b1f-ad34-c5f1769a894a" outputclass="subclause"><title id="_7b6988d2-0c12-4837-81e9-b87bfd1a4cd7">SubClause</title><num>3</num><p>A pipe system comprised entirely of metal (excluding pipe seals or the like) must be wrapped but must not be lagged or enclosed in thermal insulation over the length of its penetration of a wall, floor or ceiling unless the lagging or thermal insulation fulfils the requirements of <xref format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/575_5.2.0.xml#_86c5cb34-f4d4-4211-9fe4-042c05ad5c50" id="_e6d9765a-030b-41ca-8e71-316a7c4632f3" scope="local" type="clause">S13C7</xref>.</p></subclause><subclause id="_a4593848-64b1-47a2-a9eb-0117b634bbd3" outputclass="subclause"><title id="_ae581793-0e48-4d4c-a158-e7c109f13f3b">SubClause</title><num>4</num><p>The gap between a metal pipe and the wall, floor or ceiling it penetrates must be fire-stopped in accordance with <xref format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/575_5.2.0.xml#_86c5cb34-f4d4-4211-9fe4-042c05ad5c50" id="_737d4434-1221-4bbd-ad5f-f297da59b71d" scope="local" type="clause">S13C7</xref>.</p></subclause></clause>