<?xml version="1.0" encoding="UTF-8" standalone="no"?><?Xpress productLine="ncc-clause" ?><clause id="_9a6e93ca-9e95-45fd-a74f-499501450edc" 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>S21C4</sptc><title id="_c67b6bc8-17fd-4b6b-82e4-94226e39dbdf">Smoke reservoirs</title><archive-num>2019: Spec E2.2b: 4</archive-num><subclause id="_9b191ae4-df2d-4f51-b074-9e18782f7b34" outputclass="subclause"><title id="_6b1c0572-26f2-4002-990d-392b5186ecce">SubClause</title><num>1</num><p>A <xref format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/1277_2.0.0.xml#_524b0326-5823-4ddc-9eb3-adab587568e8" id="_7b45147d-4c0a-41ea-9410-231f2374d26e" scope="local" type="abcb-glossentry">fire compartment</xref> must be divided at ceiling level into smoke reservoirs formed by smoke baffles/curtains of <xref format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/1377_5.3.0.xml#_be8a1d10-4119-4eb0-a014-07a806b104ff" id="_a04621db-3784-485f-ba0a-bd455c3ab7c1" scope="local" type="abcb-glossentry">non-combustible</xref> and non-shatterable construction.</p></subclause><subclause id="_63d0575e-8fa8-4b70-84bc-f69e93c4430e" outputclass="subclause"><title id="_d62e6807-b46f-4e37-8f97-e7ab6d68ba3a">SubClause</title><num>2</num><p>The horizontal area of a smoke reservoir must not exceed 2000 m<sup id="_c597ffad-0932-47ce-bd4a-12d1cf8cd6a1">2</sup> and in enclosed walkways and malls of a Class 6 building must not exceed 60 m in length.</p></subclause><subclause id="_b8e8fb1d-f6ca-4f1a-b20c-e35e50ecf504" outputclass="subclause"><title id="_0c607070-3533-4962-aca5-419469820606">SubClause</title><num>3</num><p>Smoke reservoirs must be of sufficient depth to contain the smoke layer and must not be less than 500 mm below an imperforate ceiling or roof.</p></subclause><subclause id="_4fa53c88-739d-46f5-8cdf-aec64435fcd0" outputclass="subclause"><title id="_0e15d9b7-fb1f-4882-a669-7f1f126816af">SubClause</title><num>4</num><p>Within a multi-<xref format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/1483_25.0.0.xml#_53ff3ea1-55e7-4f2a-b2b3-ca445ff64c15" id="_b6ab9f69-8edf-43f7-96e9-9f945f39dec4" scope="local" type="abcb-glossentry">storey</xref> <xref format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/1277_2.0.0.xml#_524b0326-5823-4ddc-9eb3-adab587568e8" id="_b6e9c6e2-e23e-4c7b-917b-b50e11eba3c0" scope="local" type="abcb-glossentry">fire compartment</xref>—</p><ol outputclass="alpha"><li id="_485a1a9b-6798-4ea0-aa0b-b212212aa5e3">a <xref format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/1377_5.3.0.xml#_be8a1d10-4119-4eb0-a014-07a806b104ff" id="_80652152-100c-411c-8980-8c948c257151" scope="local" type="abcb-glossentry">non-combustible</xref> bulkhead or smoke baffle/curtain must be provided around the underside of each opening into a building void to minimise the spread of smoke to other <xref format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/1483_25.0.0.xml#_53ff3ea1-55e7-4f2a-b2b3-ca445ff64c15" id="_21c9ca90-5fd1-48c4-a7f6-0825304739f9" scope="local" type="abcb-glossentry">storeys</xref>; and</li><li id="_9dac6f41-3ca0-49c7-8fa6-36993055c0a3">the depth of the bulkhead or smoke baffle must be not less than the depth of the smoke reservoir provided under (3) plus an additional 400 mm.</li></ol></subclause></clause>