<?xml version="1.0" encoding="UTF-8" standalone="no"?><?Xpress productLine="ncc-clause" ?><clause xmlns:xt="urn:xpressauthor:trackchanges" id="_4472e4af-8559-4845-938b-e65d342dd20a" 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"/></meta><sptc>3.3.5</sptc><title id="_39c1013e-e40a-4c89-b2cd-7810808a21f4">Stormwater drainage</title><archive-num>2019: 3.1.3.5</archive-num><subclause id="_8d09a0da-f8d6-4ebf-9e26-012a3db69dc9" outputclass="subclause"><title id="_14206287-de2a-4210-95cd-16dac23a2c3d">SubClause</title><num>1</num><p>Where a stormwater <xref format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/1249_0.8.0.xml#_25307451-c7e1-4167-b4de-e5a1af26694c" id="_ff658a49-825c-4de5-8e46-ad2f0e696fe7" referencetype="Text" scope="local" synctargettext="false" type="abcb-glossentry">drainage</xref> system is installed, it must comply with the following:</p><ol outputclass="alpha"><li id="_f19cdaa5-215c-4a9a-a785-43dfad4c9af2">The position and manner of discharge of the stormwater <xref format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/1249_0.8.0.xml#_25307451-c7e1-4167-b4de-e5a1af26694c" id="_fc9aa59e-1d4c-455a-b90d-ab2891c7f98c" referencetype="Text" scope="local" synctargettext="false" type="abcb-glossentry">drainage</xref> system must be to the satisfaction of the <xref format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/1191_1.2.0.xml#_d102aa06-a2a6-48bb-a79f-d32cfc285636" id="_aff3b9a9-272d-4c63-baa0-17b1edfebd28" scope="local" type="abcb-glossentry">appropriate authority</xref>.</li><li id="_c5eec6ac-ea61-417d-ba23-8bb703b5d357">The stormwater <xref format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/1249_0.8.0.xml#_25307451-c7e1-4167-b4de-e5a1af26694c" id="_a74df6f1-de81-4780-9bec-d94b8f36732c" referencetype="Text" scope="local" synctargettext="false" type="abcb-glossentry">drainage</xref> system must be designed so that any overflow during heavy rain periods is prevented from flowing back into the building.</li><li id="_1c239c45-0069-4c20-829d-3042af344599">Cover to stormwater drains: the cover to 90 mm Class 6 UPVC stormwater drains installed underground must be not less than—<ol><li>under soil — 100 mm; or</li><li>under paved or concrete areas — 50 mm; or</li><li>under areas subject to light vehicle traffic—<ol><li>reinforced concrete — 75 mm; or</li><li>paved — 100 mm.</li></ol></li></ol></li></ol></subclause><callout id="_53aba364-4639-4991-86dc-065801eea7ee"><callout-type ncc-info-type="info"/><title id="_489cf245-2d84-450e-9dd8-65684583e530">Discharge points</title><p>The manner of discharge of stormwater drainage systems includes consideration of discharge points. Some examples of discharge points which may be acceptable to the <xref format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/1189_0.7.0.xml#_c1612e09-903f-47de-9ee0-00fb915ae751" id="_bc6b49fc-eee9-4021-ab89-27afa76fa2d3" scope="local" type="abcb-glossentry">appropriate authority</xref> are—</p><ul outputclass="alpha"><li>a legal discharge point at the allotment boundary; or</li><li>on-site catchment systems, such as stormwater tanks; or</li><li>on-site soil <xref format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/1249_0.8.0.xml#_25307451-c7e1-4167-b4de-e5a1af26694c" id="_08809502-d961-47fe-bd6e-b57e8565d07b" referencetype="Text" scope="local" synctargettext="false" type="abcb-glossentry">drainage</xref> systems, such as soaker wells.</li></ul></callout><callout id="_be586b10-6c69-49c3-bdd4-6ebbda14fc11"><callout-type ncc-info-type="info"/><title id="_08402422-bd46-4f88-8ef7-12a18eb13c69">Depth of cover</title><p>Different depths of soil cover (or no cover at all) can be achieved using other types of pipes. The cover specified is measured from the top of the pipe to either the finished ground level or, in the case of paved or concreted areas, to the underside of the paving or concrete.</p></callout></clause>