<?xml version="1.0" encoding="UTF-8" standalone="no"?><?Xpress productLine="ncc-clause" ?><clause xmlns:xt="urn:xpressauthor:trackchanges" id="_98d8a2f5-3c2d-4fa2-b226-bab2637fc1fb" outputclass="ncc-clause"><meta><facet building="Class 2"/><facet building="Class 3"/><facet building="Class 4"/><facet building="Class 5"/><facet building="Class 6"/><facet building="Class 7a"/><facet building="Class 7b"/><facet building="Class 8"/><facet building="Class 9a"/><facet building="Class 9b"/><facet building="Class 9c"/><facet building="Class 10b"/><facet building="Class 10c"/></meta><sptc>10.7.8</sptc><title id="_dd26b595-4f48-4f30-9526-e619a8748b1c">Acceptable forms of construction for timber and steel framed walls</title><archive-num>2019: Table 3.8.6.1d</archive-num><subclause id="_8e62a865-b00a-4824-ae2c-16571f309cd5" outputclass="subclause"><title id="_de346ea8-b4ca-44b9-aed5-2b3813e3dd8d">SubClause</title><num>1</num><p>Acceptable forms of construction for timber and steel framed walls are set out in (2) and (3).</p></subclause><subclause id="_537e8b60-1892-4099-947b-3070403e7726" outputclass="subclause"><title id="_8c423ff5-aff5-4963-9b39-f3ec6f229e8a">SubClause</title><num>2</num><p>Two rows of 90 mm x 35 mm timber studs or two rows of 64 mm steels studs at 600 mm centres with—</p><ol outputclass="alpha"><li id="_6a1eef92-a182-46af-ab9e-90dea3002a3b">an air gap not less than 20 mm between the rows of studs; and</li><li id="_1b7bed62-2c03-4f66-b019-53e0bd9fd479">50 mm thick glass wool insulation or 60 mm thick polyester insulation with a density of 11 kg/m³, positioned between one row of studs, and</li><li id="_bec3bedf-8910-4a94-9ac9-69e040a07944">two layers of 13 mm fire protective grade plasterboard or one layer of 6 mm fibre cement sheet and one layer of 13 mm fire protective grade plasterboard, fixed to outside face of studs,</li></ol><p>has an R<sub id="_95157674-15c8-4f2b-b706-99a72a799026">w</sub> + C<sub id="_a31c0149-130d-415a-bb35-0c3fede76a2f">tr</sub> of not less than 50, if constructed in accordance with <xref format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/859_0.6.0.xml#_f4fc5b53-c48a-49e5-9b18-e91d72ca5b48" id="_c8c3ee83-fe16-47fa-85f7-3bc61f910222" referencetype="Text" scope="local" synctargettext="false" type="image-reference">Figure 10.7.8a</xref>.</p></subclause><subclause id="_85f1fce8-b8ae-43b9-ad94-858cb2f93fdb" outputclass="subclause"><title id="_11e38ebd-2355-4598-a558-1b7cea9b2930">SubClause</title><num>3</num><p>Two rows of 64 mm steel studs at 600 mm centres with—</p><ol outputclass="alpha"><li id="_e64175ec-deea-4049-b82e-9c8d48868b41">an air gap not less than 80 mm between the rows of studs; and</li><li id="_ea111b01-aed9-447f-86c9-837321e6dbe7">200 mm thick polyester insulation with a density of 14 kg/m<sup id="_37314212-1864-4a42-a264-229c9eae9c0d">3</sup> positioned between studs; and</li><li id="_1134bf2b-ee26-4573-92fb-b380a571a15e">one layer of 13 mm fire-protective grade plasterboard and one layer 13 mm plasterboard on one outside face and one layer of 13 mm fire-protective grade plasterboard on the other outside face,</li></ol><p>has an R<sub id="_04d15380-5121-4a35-8d69-532d4eb07a89">w</sub> + C<sub id="_6b847e0f-3d07-48d7-8f52-d62ed7ea2245">tr</sub> of not less than 50, if constructed in accordance with <xref format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/860_0.6.0.xml#_b4871323-5ed2-47d1-93f9-0bdd7f82dedb" id="_713d74e7-20c1-43e6-b323-b730773d71ee" referencetype="Text" scope="local" synctargettext="false" type="image-reference">Figure 10.7.8b</xref>.</p></subclause><image-reference conref="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/859_0.6.0.xml" id="_f4fc5b53-c48a-49e5-9b18-e91d72ca5b48"><num/><title id="_39b3180c-3d3a-45d9-84f9-ddd00c84c7b8"/></image-reference><image-reference conref="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/860_0.6.0.xml" id="_b4871323-5ed2-47d1-93f9-0bdd7f82dedb"><num/><title id="_8e2604fc-823e-4628-8002-0a578b06f503"/></image-reference></clause>