BS IS0 21927-5:2018 BSl Standards Publication Smoke and heat control systems Part 5: Powered smoke exhaust systems - Requirements and design bsi. BSISO21927-5:2018 BRITISH STANDARD Nationalforeword This British Standard is the UK implementation of IS021927-5:2018 The UK participation in its preparation was entrusted to Technical Committee FSH/25, Smoke, heat control systems and components. A list of organizations represented on this committee can be obtained on requestto its secretary. This publication does not purport to include all the necessary provisions ofa contract.Users areresponsiblefor its correctapplication. @TheBritishStandards Institution2018 Published by BSI Standards Limited 2018 ISBN9780580988974 ICS13.220.20 Compliance with a British Standard cannot confer immunity from legalobligations. This British Standard was published under the authority of the Standards PolicyandStrategyCommitteeon31December2018. Amendments/corrigenda issued sincepublication Date Text affected BSIS021927-5:2018 INTERNATIONAL ISO STANDARD 21927-5 First edition 2018-11-26 Smoke and heat control systems - Part 5: Powered smoke exhaust systems Requirements and design InstallationspourI'extractiondefumeeetdechaleur- Partie5:Systemes d'extractionde fumée mecaniques-Exigences et planification Reference number IS0 21927-5:2018(E) ISO @IS0 2018