<?xml version="1.0" encoding="UTF-8" standalone="no"?><?Xpress productLine="ncc-clause" ?><clause id="_d153b0f8-5933-42a5-a10f-c8bcdc93312e" 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>S8C3</sptc><title id="_0527ac58-3f43-432c-9491-fd74459f998c">General requirements for external wall panels</title><archive-num>2019: Spec C1.11: 3</archive-num><subclause id="_955c0321-583a-4552-97cf-e97a33fd2e5d" outputclass="subclause"><title id="_9cf9ced4-3946-442c-b020-28c37bd123b9">SubClause</title><num>1</num><p>Cast-in inserts and fixings must be anchored into the panel with welded bars or be fixed to the panel reinforcement.</p></subclause><subclause id="_e1208a98-b8f5-444b-8580-088422dff4a1" outputclass="subclause"><title id="_721eb4c1-853b-4706-a2ec-235c66f07bc6">SubClause</title><num>2</num><p>Cast-in inserts for top connections and fixings acting together must be able to resist an ultimate load of two times the larger of the forces <xref format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/1432_4.0.0.xml#_af6fde9f-147d-4782-8b85-42044e80fd42" id="_6a6c5b7f-5419-4573-9e04-373c4862a534" scope="local" type="abcb-glossentry">required</xref> to develop—</p><ol outputclass="alpha"><li id="_7a948f61-d939-4619-b038-56ec49d69f70">the ultimate bending moment capacity of the panel at its base; or</li><li id="_c50792a7-8f3f-4a7f-88b9-7f56dbd5386d">the overturning moment at the base of the panel arising from an outwards lateral displacement at the top of the panel equal to one tenth of the panel height.</li></ol></subclause><subclause id="_a6460674-ad11-45b2-8402-73f201b249fb" outputclass="subclause"><title id="_fbfef200-fe6e-480e-a3cd-7b0a64ee4037">SubClause</title><num>3</num><p>Top connections of the panel exposed to fire, such as clips and drilled-in inserts, acting together must be able to resist an ultimate load of six times the larger of the forces <xref format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/1432_4.0.0.xml#_af6fde9f-147d-4782-8b85-42044e80fd42" id="_a83a75ae-f784-4384-b6c2-a6312ed6d55f" scope="local" type="abcb-glossentry">required</xref> to develop the moment specified in (2)(a) or (b).</p></subclause><subclause id="_d5cca616-9374-45cb-955b-fbabdae9ceac" outputclass="subclause"><title id="_706ff97f-dfbd-4e08-a9a1-6bdd0748762a">SubClause</title><num>4</num><p>Lateral supporting members and their connections must be designed to resist the connection forces specified in (2) and (3) and in the case of an eaves tie member the force in the member must be determined assuming that it deforms in a manner compatible with the lateral displacement of the wall panels, and that it acts in tension only.</p></subclause><subclause id="_4764bd13-9937-47ab-b4f9-56f4ad93ee12" outputclass="subclause"><title id="_1407da35-b2ba-41e6-a085-e0a8af3f5878">SubClause</title><num>5</num><p><xref format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/1267_2.3.0.xml#_d87c7cc0-d0b0-40ab-9a5b-d070ed6e115e" id="_420242b2-ed82-43e9-bd3c-f8ed111655b7" scope="local" type="abcb-glossentry">External wall</xref> panels that span vertically must have at least two upper connections per panel to the supporting member, except that where a number of panels are designed to act as one unit, (e.g. tongue and groove hollow-core panels), only two upper connections are <xref format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/1432_4.0.0.xml#_af6fde9f-147d-4782-8b85-42044e80fd42" id="_21df2f95-35c2-4cd4-9d7f-077dfb3f6c13" scope="local" type="abcb-glossentry">required</xref> for each unit.</p></subclause><subclause id="_8b7d0af4-0408-4028-beea-026c36e6f18d" outputclass="subclause"><title id="_df9136a4-5c41-4e1e-8fcc-3dc6c9841f6b">SubClause</title><num>6</num><p><xref format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/1267_2.3.0.xml#_d87c7cc0-d0b0-40ab-9a5b-d070ed6e115e" id="_fa0193fa-8deb-4ea9-ac25-8a0c0af6d845" scope="local" type="abcb-glossentry">External wall</xref> panels that span horizontally between columns must have at least two connections at each column.</p></subclause><subclause id="_26d60259-faeb-469a-884d-b58882d01b79" outputclass="subclause"><title id="_a070897f-f8d6-4bd7-84fb-698c7c374fc1">SubClause</title><num>7</num><p>Connections providing lateral support to a panel must be designed to remain engaged to the supported panel both before and during a fire.</p></subclause><callout id="_78fe183b-2ae8-4fe8-803b-a5a2401ba120"><callout-type ncc-info-type="notes"/><p>The increased forces specified by the multiplier of two or six in (2) and (3) above are to take account of the lower strength of the connections and members at the higher than ambient temperatures expected in a fire.</p></callout></clause>