<?xml version="1.0" encoding="UTF-8" standalone="no"?><?Xpress productLine="ncc-clause" ?><clause xmlns:xt="urn:xpressauthor:trackchanges" id="_0efd7464-ddca-460e-ad3a-06a442ac927f" outputclass="ncc-clause"><meta><facet building="Class 1a"/><facet building="Class 1b"/><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 10a"/><facet building="Class 10b"/><facet building="Class 10c"/></meta><sptc>S28C9</sptc><title id="_1f780ba1-e5bb-44a7-a82c-b18cb438fb23">Acceptable forms of construction for floors — autoclaved aerated concrete</title><archive-num>2019: Spec F5.2: Table 3</archive-num><subclause id="_bbaf258d-bbc6-459d-983d-1115403706a6" outputclass="subclause"><title id="_e40d3704-b91b-49de-9bd2-a2e302e32ed7">SubClause</title><num>1</num><p>An acceptable form of construction for autoclaved aerated concrete floors is set out in (2).</p></subclause><subclause id="_1bb474e2-daf3-43a2-92ab-6534e3b7641d" outputclass="subclause"><title id="_b50c3013-9e37-4a37-8b25-4eea8bc70bf3">SubClause</title><num>2</num><p>75 mm thick autoclaved aerated concrete floor panel with—</p><ol outputclass="alpha"><li id="_d6b00de3-94b4-4910-b676-80fbfea44e4d">8 mm ceramic tiles with flexible adhesive and <xref format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/1519_0.5.0.xml#_02296d09-c6a7-41f4-a398-1f059045818c" id="_4a93644e-4fec-4658-9fff-c325cc0947b9" referencetype="Text" scope="local" synctargettext="false" type="abcb-glossentry">waterproof</xref> <xref format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/4651_0.4.0.xml#_6e2c1aaa-5993-4850-908f-ac4007e94535" id="_04d046c2-8573-4585-b227-5e6156f3b280" referencetype="Text" scope="local" synctargettext="false" type="abcb-glossentry">membrane</xref>, located above the slab; and</li><li id="_9105124c-d473-4681-93e5-c7b859a9a52e">timber joists at 600 mm centres; and</li><li id="_83cfd243-e8ad-400a-bf47-308585ce13ca">R1.5 glass wool insulation positioned between timber joists; and</li><li id="_4818a282-d4f5-4c86-869b-b172d434c03c">28 mm metal furring channels and resilient mounts fixed to underside of joists; and</li><li id="_db5a1f2c-3bc7-498d-abb6-ee45ec4144a0">two layers of 13 mm plasterboard fixed to furring channels,</li></ol><p>has an R<sub id="_96fc0a87-85ff-4f05-9123-b09c9e0cf2d6">w</sub> + C<sub id="_dd5c92dd-a7e3-4d1d-bf9b-ae31a8149db8">tr</sub> of not less than 50, an L<sub id="_a17c1001-1c43-45dc-ad66-c848298aff70">n,w</sub> of not more than 62 and an R<sub id="_ab6b5bf2-5340-443a-bd69-f0ad88e4a00f">w</sub> of not less than 50, if constructed as shown in <xref format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/526_0.5.0.xml#_d0362036-4c50-4fa0-99db-97dc834f793e" id="_f5dc1ff3-ebd0-43d8-9c5d-ac368a88e3f6" referencetype="Text" scope="local" synctargettext="false" type="image-reference">Figure S28C9</xref>.</p></subclause><image-reference conref="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/526_0.5.0.xml" id="_d0362036-4c50-4fa0-99db-97dc834f793e"><num/><title id="_601e78e7-9ed0-4b4c-9dc7-57fd056268c6"/></image-reference></clause>