<?xml version="1.0" encoding="UTF-8" standalone="no"?><?Xpress productLine="ncc-clause" ?><clause author="Kieran O'Donnell" dateTime="2021-02-24T14:55:13" id="_07249b3f-17ce-4870-8c94-6911dc5338dc" outputclass="ncc-clause" type="insert"><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 building="Class 10b"/><facet climate="Climate zone 8"/></meta><sptc>4.2.19</sptc><title id="_6508be6a-d6b0-4df0-8b14-1f47dd3645ab">Shrinkage control</title><archive-num>2019: 3.2.5.3</archive-num><subclause id="_45fd51ea-1cec-4b1c-b6f8-08e74ef9d76a" outputclass="subclause"><title id="_5c632b70-c454-47b4-ba49-8504da997456">SubClause</title><num>1</num><p>Where brittle floor coverings, such as ceramic tiles, are to be used over an area greater than 16 m<sup xmlns:inv="urn:xpressauthor:xpressdocument" id="_26704af4-8db1-4480-994f-7eb7e6ac3632" inv:access="external">2</sup>, one of the following additional measures must be taken to control the effect of shrinkage cracking—</p><ol outputclass="alpha"><li id="_36da201d-6c14-4e65-b133-47767511fa9a">the amount of shrinkage reinforcement (steel reinforcement mesh in the slab panel) must be—<ol><li>increased to SL92 or equivalent throughout the affected slab area; or</li><li>reinforced top and bottom with sheets of slab mesh throughout the affected slab area; or</li></ol></li><li id="_76d3e1c4-b249-4fb2-94da-1a04be265455">the bedding system for brittle coverings must be selected on the basis of the expected slab movement and the characteristics of the floor covering (including the use of expansion joints etc.); or</li><li id="_58f931dc-1827-4d29-8b88-c55515e5afef">the placement of floor covering must be delayed for not less than 3 months after the concrete has been poured.</li></ol></subclause></clause>