<?xml version="1.0" encoding="UTF-8" standalone="no"?><?Xpress productLine="ncc-clause" ?><clause xmlns:xt="urn:xpressauthor:trackchanges" id="_e6d4b2a0-38a5-4c33-9d0a-aee3ad440032" 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>G2D3</sptc><title id="_b61c7d79-064c-4d59-8859-01b8c03ba99f">Open fireplaces</title><archive-num>2019: G2.3</archive-num><subclause id="_dec2b507-53fb-42bd-b3f4-e1dd16706917" outputclass="subclause"><title id="_4f467764-26bf-4c08-bad7-99f3105d5c33"/><num>1</num><p>An open fireplace, or solid-fuel burning appliance in which the fuel-burning compartment is not enclosed, must have—</p><ol outputclass="alpha"><li id="_fb2cfa2b-f020-4a65-9117-555adb951f36">a hearth constructed of stone, concrete, masonry or similar <xref format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/1377_5.3.0.xml#_be8a1d10-4119-4eb0-a014-07a806b104ff" id="_71972f18-1b43-4dba-b797-a82d8936e0ea" scope="local" type="abcb-glossentry">non-combustible</xref> material so that—<ol><li>it extends not less than 300 mm beyond the front of the fireplace opening and not less than 150 mm beyond each side of that opening; and</li><li>it extends beyond the limits of the fireplace or appliance not less than 300 mm if the fireplace or appliance is free-standing from any wall of the room; and</li><li>its upper surface does not slope away from the grate or appliance; and</li><li><xref format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/1221_0.9.0.xml#_a7b1bb43-dc94-41fb-9e49-6a37f0d6b236" id="_3713b884-51af-4b6c-83fd-2a9c79a90605" scope="local" type="abcb-glossentry">combustible</xref> material situated below or around the external edge of the hearth, but not below that part <xref format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/1432_4.0.0.xml#_af6fde9f-147d-4782-8b85-42044e80fd42" id="_f1728b83-d913-4806-9e0f-9bb1f6f3291b" scope="local" type="abcb-glossentry">required</xref> to extend beyond the fireplace opening or the limits of the fireplace, is not less than 150 mm from the upper surface of the hearth; and</li></ol></li><li id="_3aeee197-55fa-4544-99b4-d500a6e52d0d">walls forming the sides and back of the fireplace up to not less than 300 mm above the underside of the arch or lintel which—<ol><li>are constructed in 2 separate leaves of solid masonry with a total combined thickness not less than 180 mm, excluding any cavity; and</li><li>do not consist of concrete block masonry in the construction of the inner leaf; and</li></ol></li><li id="_89a6adae-7d5b-4558-a83c-5c0e48cb9618">walls of the chimney above the level referred to in (b)—<ol><li>constructed of masonry units with a net volume, excluding cored and similar holes, not less than 75% of their gross volume, measured on the overall rectangular shape of the units, and with an actual thickness of not less than 100 mm; and</li><li>lined internally to a thickness of not less than 12 mm with rendering consisting of 1 part cement, 3 parts lime, and 10 parts sand by volume, or other suitable material; and</li></ol></li><li id="_164d2090-c536-434b-b6e1-cbb9e66fe1e9">suitable <xref format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/1235_0.7.0.xml#_0d21b1c5-7e4f-446c-99a0-4c7564ed7952" id="_cc5e0564-f078-4e80-b3ec-c89799f48e94" referencetype="Text" scope="local" synctargettext="false" type="abcb-glossentry">damp-proof courses</xref> or <xref format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/1305_0.15.0.xml#_f3cdd6b2-0801-4750-ac8b-515dde29def5" id="_c9e07e08-795d-4e27-8574-1d48a1e54a2d" referencetype="Text" scope="local" synctargettext="false" type="abcb-glossentry">flashings</xref> to maintain weatherproofing.</li></ol></subclause></clause>