<?xml version="1.0" encoding="UTF-8" standalone="no"?><table-reference graph="None" id="_62b87d74-280b-4e15-bf14-9a0c9a495ca0"><num>J4D5</num><title id="_1d874f6a-e8e1-4ea7-aaa0-d586f5800104">Roof lights – Total system SHGC</title><table id="_f6d0e263-5e45-4602-b965-101007e3cbb6" keycol="1"><tgroup cols="3"><colspec colname="001" colnum="1" colwidth="98.75*"/><colspec colname="002" colnum="2" colwidth="163.00*"/><colspec colname="003" colnum="3" colwidth="169.25*"/><thead><row><entry><xref format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/1441_5.5.0.xml#_12b88f11-1c3d-4d91-bc65-02588a4dc524" id="_63b9bae6-9bbf-4d3e-baf0-5cd888f3aeae" scope="local" type="abcb-glossentry">Roof light</xref> shaft index <sup id="_90388340-0214-409f-bca4-744f2ec95c6c">N</sup><sup id="_48f70600-3637-4f47-b3b4-bb324a0cbdd3">ote 1</sup></entry><entry>Total area of <xref format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/1441_5.5.0.xml#_12b88f11-1c3d-4d91-bc65-02588a4dc524" id="_2211bb5f-a012-443c-81f8-192e8a9ae9e6" scope="local" type="abcb-glossentry">roof lights</xref> up to 3.5% of the <xref format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/1314_2.10.0.xml#_7da927fe-453e-424f-b6ec-280f4e464397" id="_8f4692b6-5e18-45a3-853f-be87cb26dd57" scope="local" type="abcb-glossentry">floor area</xref> of the room or space</entry><entry>Total area of <xref format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/1441_5.5.0.xml#_12b88f11-1c3d-4d91-bc65-02588a4dc524" id="_1494cdb5-3873-4f51-a932-0e10f9d358b6" scope="local" type="abcb-glossentry">roof lights</xref> more than 3.5% and up to 5% of the <xref format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/1314_2.10.0.xml#_7da927fe-453e-424f-b6ec-280f4e464397" id="_f94ed357-a237-4558-b0b9-3ec7c7e88504" scope="local" type="abcb-glossentry">floor area</xref> of the room or space</entry></row></thead><tbody><row><entry>&lt;1.0</entry><entry>≤ 0.45</entry><entry>≤ 0.29</entry></row><row><entry>≥ 1.0 to &lt; 2.5</entry><entry>≤ 0.51</entry><entry>≤ 0.33</entry></row><row><entry>≥ 2.5</entry><entry>≤ 0.76</entry><entry>≤ 0.49</entry></row></tbody></tgroup></table><desc-note id="_a9333e2f-637c-44ca-8644-4a31dedfaeae"><ol outputclass="numbered"><li id="_41cb8639-0138-4916-88dd-48d34fe038f2">The <xref xmlns:inv="urn:xpressauthor:xpressdocument" format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/1441_5.5.0.xml#_12b88f11-1c3d-4d91-bc65-02588a4dc524" id="_cd6f5229-8f78-4dcd-8853-265dbe78490a" inv:access="external" scope="local" type="abcb-glossentry">roof light</xref> shaft index is determined by measuring the distance from the centre of the shaft at the roof to the centre of the shaft at the ceiling level and dividing it by the average internal dimension of the shaft opening at the ceiling level (or the diameter for a circular shaft) in the same units of measurement.</li><li id="_733d4183-1850-4cc5-9cae-873348cf297e">The area of a <xref xmlns:inv="urn:xpressauthor:xpressdocument" format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/1441_5.5.0.xml#_12b88f11-1c3d-4d91-bc65-02588a4dc524" id="_06ef999d-3495-4cf7-80e7-e982d23e3a84" inv:access="external" scope="local" type="abcb-glossentry">roof light</xref> is the area of the roof opening that allows light to enter the building.</li><li id="_c51afdbb-7f78-4f60-a15b-59c6ad59dbcd">The total area of <xref xmlns:inv="urn:xpressauthor:xpressdocument" format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/1441_5.5.0.xml#_12b88f11-1c3d-4d91-bc65-02588a4dc524" id="_b7b2b79e-1f9e-4869-bc4a-f1f8b404c3b1" inv:access="external" scope="local" type="abcb-glossentry">roof lights</xref> is the combined area for all <xref xmlns:inv="urn:xpressauthor:xpressdocument" format="dita" href="/tmp/QppServer/Publishing/5e2c1f63-e589-4ce1-95e8-5c3e286a7aff/1441_5.5.0.xml#_12b88f11-1c3d-4d91-bc65-02588a4dc524" id="_3ec49d0d-a28d-4888-82cf-ca4d5e3da32e" inv:access="external" scope="local" type="abcb-glossentry">roof lights</xref> serving the room or space.</li></ol></desc-note></table-reference>