<?xml version="1.0" encoding="UTF-8" standalone="no"?><table-reference graph="None" id="_d1ecae2b-27b7-4394-b59f-fe41cd56a20e"><num>4.2.20a</num><title id="_bd09f311-20c7-4d4f-b416-895cc7d82b78">Localised thickening under concentrated load — tiled floor and tiled roof — roof load area = 0 m<sup id="_364868fb-fd1a-408e-a84b-ed92642ab6b3">2</sup></title><table id="_c4c777c7-4cf8-4932-a87a-fd514a74d265" keycol="1"><tgroup cols="4"><colspec colname="001" colnum="1" colwidth="108.00*"/><colspec colname="002" colnum="2" colwidth="108.00*"/><colspec colname="003" colnum="3" colwidth="108.00*"/><colspec colname="004" colnum="4" colwidth="108.00*"/><thead><row><entry morerows="1">Localised thickening</entry><entry nameend="004" namest="002">Maximum floor load area (m<sup id="_23b6ab96-57ba-48ec-a0d3-2143c9eae46b">2</sup>)</entry></row><row><entry>4</entry><entry>10</entry><entry>16</entry></row></thead><tbody><row><entry>Square thickening size (mm)</entry><entry>450 x 450</entry><entry>650 x 650</entry><entry>850 x 850</entry></row><row><entry>Thickening depth (mm)</entry><entry>250</entry><entry>350</entry><entry>400</entry></row></tbody></tgroup></table><desc-note id="_eeef8c08-f50a-4f18-b840-359421c38ca7"><ol outputclass="numbered"><li id="_f7d0bfc1-6711-4d63-b502-8181be3f4e51">Load accounted for includes 0.98 kPa permanent tiled floor, 0.85 kPa permanent tiled roof, 1.16 kN/m permanent wall, permanent member self-weight, 1.5 kPa or 1.1 kN imposed floor and 0.25 kPa imposed roof.</li><li id="_6b7d3f0f-b5f8-41b7-8d92-433ed3ef6508">Load combinations included are G + 0.5Q for ULS.</li><li id="_eeb6bd46-ea8e-42af-8ea6-9acfe4cc726c">Minimum bearing pressure is 100 kPa for pad footings.</li><li id="_c0c88b9e-a4aa-4901-a1c5-e7e20d3f514b">A roof load area of “0” must be used for footings not supporting roof loads.</li><li id="_a6dfff32-cf9a-48c6-97f1-bd38787772a9">The length of wall allowed for is equal to the square root of the floor area.</li></ol></desc-note></table-reference>