<?xml version="1.0" encoding="UTF-8" standalone="no"?><?Xpress productLine="ncc-clause" ?><clause xmlns:xt="urn:xpressauthor:trackchanges" id="_04bf39af-3d64-40ec-b66a-c378bd90e0f9" outputclass="ncc-clause"><sptc>S1C4</sptc><title id="_ff80b89e-6213-4a0c-88b6-4adc24dd32f6">Interchangeable materials</title><archive-num>2019: Sch. 5: 4</archive-num><subclause id="_c3b55417-49b3-4703-a1bd-a54fc0e19c58" outputclass="subclause"><title id="_472d9df1-268c-4ffe-b6f5-d456e92cfd19">SubClause</title><num>1</num><p>Concrete and plaster — An FRL achieved with any material of Group A, B, C, D or E as an ingredient in concrete or plaster, applies equally when any other material of the same group is used in the same proportions:</p><ol outputclass="alpha"><li id="_62afc972-ba13-43ca-a3bb-c7d1a484e0e3">Group A: any portland cement.</li><li id="_db1206e5-84dd-4c23-bbea-c3b441d373fd">Group B: any lime.</li><li id="_cc2e63e9-ffa0-4994-9814-2688bbb70f8b">Group C: any dense sand.</li><li id="_146bd5cb-35bf-47f0-aac0-8244b7d1e4e4">Group D: any dense calcareous aggregate, including any limestone or any calcareous gravel.</li><li id="_ba241d26-3e48-4ed0-b040-2bc121291363">Group E: any dense siliceous aggregate, including any basalt, diorite, dolerite, granite, granodiorite or trachyte.</li></ol></subclause><subclause id="_ff89615a-ac73-4940-8834-6a0b340a4ad5" outputclass="subclause"><title id="_531536f8-fe3f-4505-a3b1-aaef5283a1d4">SubClause</title><num>2</num><p>Perlite and vermiculite — An FRL achieved with either gypsum-perlite plaster or gypsum-vermiculite plaster applies equally for each plaster.</p></subclause></clause>