<?xml version="1.0" encoding="UTF-8" standalone="no"?><?Xpress productLine="ncc-clause" ?><clause xmlns:xt="urn:xpressauthor:trackchanges" id="_e3d35382-da0e-4edc-88de-26d2c87081c0" 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>D3D30</sptc><title id="_a3e71cff-0c7f-493a-814c-7968fad66914">Timber stairways: Concession</title><archive-num><xt:delText xt:action="start" xt:author="Patrick Kerrigan" xt:dateTime="2024-03-11T14:22:00" xt:id="092818fe-d97c-4288-9c25-0ae37787318b"/>2019: D2.25<xt:delText xt:action="end" xt:id="092818fe-d97c-4288-9c25-0ae37787318b"/></archive-num><subclause id="_29496962-1fe2-457e-9af9-587da4607a48" outputclass="subclause"><title id="_c4936c49-50fe-49fe-b5f2-0e8f8110a9b9">SubClause</title><num>1</num><p>Notwithstanding <xref format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/1619_1.2.0.xml#_97ef6cde-1413-4f25-aa6d-e3ca1144a742" id="_730e9c10-0063-42b2-9471-f9b352593f59" scope="local" type="clause">D3D3(a)</xref>, timber treads, risers, landings and associated supporting framework within a <xref format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/1432_4.0.0.xml#_af6fde9f-147d-4782-8b85-42044e80fd42" id="_05c041bf-ab5d-4d55-84b1-4a02daff3de0" scope="local" type="abcb-glossentry">required</xref> <xref format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/1285_2.1.0.xml#_c71e675e-d6e1-4612-8e59-381a56e224a8" id="_087ae4b5-1c4d-4d9b-b450-f7bd06aa7d83" scope="local" type="abcb-glossentry">fire-isolated stairway</xref> or <xref format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/1283_2.0.0.xml#_2f0af1de-a7c1-44b9-a8b5-1faaedfdb023" id="_7c0beeec-57ae-413c-abea-9293c11d8cc9" scope="local" type="abcb-glossentry">fire-isolated passageway</xref> may be constructed from <xref format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/1288_2.5.0.xml#_b999bcb2-7ffd-4512-876a-a30c20b21025" id="_865ab5ee-12b7-4d14-9d79-e29059de22ea" scope="local" type="abcb-glossentry">fire-protected timber</xref> in accordance with <xref format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/1913_1.3.0.xml#_28094a4f-15c7-45f8-9152-ebcf0443e04c" id="_07085d18-f6b5-427a-a2c3-736653afe98a" scope="local" type="clause">C2D13</xref>—</p><ol outputclass="alpha"><li id="_79e4a8b7-7970-465f-8453-a9f6f2f5b7b9">if the timber—<ol><li>has a finished thickness of not less than 44 mm; and</li><li>has an average density of not less than 800 kg/m<sup id="_3f98329e-b77e-44cf-a6bb-4011a1e68072">3</sup> at a moisture content of 12%; and</li></ol></li><li id="_b5ca4032-7cac-4a4d-b149-d82a858f69e2">subject to—<ol><li>the building being protected throughout by a sprinkler system (other than a FPAA101D system) complying with <xref format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/167_0.8.0.xml#_481171d2-3952-490d-b64d-c3d3f5d7825a" id="_70a6a34d-0483-4048-9363-2ec56b6b71aa" scope="local" type="specification">Specification 17</xref> which extends to within the fire-isolated enclosure; and</li><li>fire protection being provided to the underside of stair <xref format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/1307_2.8.0.xml#_448dd81f-b4c5-4c29-9aec-d57b83b33db5" id="_469fa532-d740-4694-95aa-a7e09668e918" scope="local" type="abcb-glossentry">flights</xref> and landings located immediately above a landing level which—<ol><li>is at or near the level of egress; or</li><li>provides direct access to a carpark.</li></ol></li></ol></li></ol></subclause><subclause id="_f18158a4-3bd0-4b8e-bbae-efcd313b4cbe" outputclass="subclause"><title id="_4864510d-7833-4371-993b-b9f6d1b9692a">SubClause</title><num>2</num><p>Fire protection required by (1) must be not less than one layer of 13 mm fire-protective grade plasterboard fixed in accordance with the system requirements for a <xref format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/1289_0.6.0.xml#_e18489e8-9038-4b37-a28f-401776a4aff5" id="_a5bf99f9-5012-4428-9fd6-50f84f6b4a67" scope="local" type="abcb-glossentry">fire-protective covering</xref>.</p></subclause></clause>