<?xml version="1.0" encoding="UTF-8" standalone="no"?><?Xpress productLine="ncc-clause" ?><clause id="_bb738e51-43d0-4d77-8de0-1ad013444e34" 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>S12C3</sptc><title id="_451a29e3-63ad-4bfd-a58d-d6990f4da377">General requirements for smoke doors</title><archive-num>2019: Spec C3.4: 3.1</archive-num><subclause id="_c2750513-466e-4f14-aa2c-e0c9841a6aa6" outputclass="subclause"><title id="_9f8eab43-f1b3-4225-85fd-a15eb1442d98">SubClause</title><num>1</num><p>Smoke doors must be constructed so that smoke will not pass from one side of the doorway to the other and, if they are glazed, there is minimal danger of a person being injured by accidentally walking into them.</p></subclause></clause>