ISO INTERNATIONAL STANDARD 24678-4 First edition 2023-06 Fire safety engineering Requirements governing algebraic formulae Part 4: Smoke layers Ingenierie de la sécurite incendie Exigences regissant les formules algebriques Partie 4:Couches defumée Reference number IS0 24678-4:2023(E) ISO IS02023 IS0 24678-4:2023(E) COPYRIGHTPROTECTED DOCUMENT @IS02023 All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on or ISoO's member body in the country of the requester. ISO copyright office CP 40i : Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +41 22 749 01 11 Email:[email protected] Website: www.iso.org Published in Switzerland ii @ IS0 2023- All rights reserved

ISO 24678-4 2023 Fire safety engineering — Requirements governing algebraic formulae — P

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