<?xml version="1.0" encoding="UTF-8" standalone="no"?><?Xpress productLine="ncc-clause" ?><clause id="_47aa5408-5b4e-4cda-8303-785348983650" outputclass="ncc-clause"><meta><facet building="Class 2"/><facet building="Class 3"/><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 9c"/><facet climate="Climate zone 8"/></meta><sptc>5.6.4</sptc><title id="_c8cb53d9-c776-4d18-a9cc-7c9f8150541b">Mortar joints</title><archive-num>2019: 3.3.5.5</archive-num><subclause id="_6264725c-bfd8-4b29-8d85-e85fac9e0363" outputclass="subclause"><title id="_a8214f99-2ef6-4e08-bb1c-49a2d2939274">SubClause</title><num>1</num><p>Unless otherwise specified, masonry bed and perpend joints must have a nominal thickness of 10 mm.</p></subclause><subclause id="_f512773e-5b5c-41af-857c-940a16c7d301" outputclass="subclause"><title id="_2a4fcf18-9411-4f2b-9a6a-f27872c10f8c">SubClause</title><num>2</num><p>Raked joints are not to be used in saline environments or areas subject to heavy industrial airborne pollution.</p></subclause><subclause id="_18abd3c7-b0a9-466d-85d2-c984cbfecf01" outputclass="subclause"><title id="_d884f375-352b-4ed9-97bf-847821c96671">SubClause</title><num>3</num><p>Where raked joints are used the depth of raking must not be—</p><ol outputclass="alpha"><li id="_7693123a-792e-4f83-bc09-db9399506101">closer than 5 mm to any perforation in cored unit masonry or 20 mm in hollow unit masonry; or</li><li id="_01b01285-ab0e-4cfd-90b7-529753c4151f">more than 5 mm for masonry units at least 90 mm wide; or</li><li id="_41be11b1-cbf8-4eb4-9966-5d3bfdea8b32">more than 10 mm for masonry units at least 110 mm wide.</li></ol></subclause></clause>