<?xml version="1.0" encoding="UTF-8" standalone="no"?><?Xpress productLine="ncc-clause" ?><clause xmlns:xt="urn:xpressauthor:trackchanges" id="_40a3fc53-c9f3-498f-9f96-270698ce8823" 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>F7D3</sptc><title id="_f6de72de-8b08-4adb-9099-38a819b850cc">Determination of airborne sound insulation ratings</title><archive-num>2019: F5.2</archive-num><subclause id="_62e3d84f-4a1e-4cc3-8e18-7ab9022fb357" outputclass="subclause"><title id="_84266224-bbeb-4a06-9820-136b43d3a73c">SubClause</title><num>1</num><p>A form of construction <xref format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/1432_4.0.0.xml#_af6fde9f-147d-4782-8b85-42044e80fd42" id="_09384175-2e56-47cd-a42f-9c0eaf845ba6" scope="local" type="abcb-glossentry">required</xref> to have an airborne sound insulation rating must—</p><ol outputclass="alpha"><li id="_cffd3299-1e8d-4b28-909d-489982e69943">have the <xref format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/1432_4.0.0.xml#_af6fde9f-147d-4782-8b85-42044e80fd42" id="_ebf2d4fe-f11e-4023-98ee-e42dc095e5c4" scope="local" type="abcb-glossentry">required</xref> value for weighted sound reduction index (R<sub id="_02f459c6-2020-4968-b17d-9c9d548ee57d">w</sub>) or weighted sound reduction index with spectrum adaptation term (R<sub id="_27e48533-465d-49e1-95b6-7415bf1fb8af">w</sub> + C<sub id="_8ee6a179-8b73-4e58-9b7f-50f46bb37bfa">tr</sub>) determined in accordance with AS<xt:delText xt:action="start" xt:author="Jerome Samuel" xt:dateTime="2024-09-09T11:50:00" xt:id="303626c1-b1a2-4bdc-a376-52e09b4d2166"/>/NZS<xt:delText xt:action="end" xt:id="303626c1-b1a2-4bdc-a376-52e09b4d2166"/> ISO 717.1 using results from laboratory measurements; or</li><li id="_fc63a84b-2507-4be9-bde2-1a8ae5d49853">comply with <xref format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/193_0.7.0.xml#_eff72f84-ae5b-441f-a9f1-596ca32a1ab9" id="_64e48802-e4e6-4d1c-9566-bd6e9c27517a" scope="local" type="specification">Specification 28</xref>.</li></ol></subclause></clause>