<?xml version="1.0" encoding="UTF-8" standalone="no"?><?Xpress productLine="ncc-clause" ?><clause id="_39b1bb3c-ca23-41fc-9f1a-8bfe901ac4d9" outputclass="ncc-clause" variation="NT"><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>S28C1</sptc><title id="_cdf220ee-abb8-4a8e-a70e-06ed67879aea">Scope</title><archive-num>New for 2022</archive-num><subclause id="_375ceb40-4cb9-418f-8c49-7f77abb3ba0e" outputclass="subclause"><title id="_df19ef02-3a90-432d-859e-5aea204bf2a4">SubClause</title><num>1</num><p>This Specification lists the weighted sound reduction index R<sub id="_e709057a-1b57-4b8a-88c9-6fb03cdfaf16">W</sub> for some common forms of construction.</p></subclause></clause>