ISO INTERNATIONAL STANDARD 12958-1 First edition 2020-10 Geotextiles and geotextile-related products Determination of water flow capacity in their plane - Part 1: Index test Géotextiles et produits apparentes - Détermination de la capacite de debitdansleurplan- Partie 1: Essai index Reference number IS0 12958-1:2020(E) tso @ ISO 2020 IS0 12958-1:2020(E) COPYRIGHTPROTECTEDDOCUMENT IS02020 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 below or ISo's member body in the country of the requester. ISO copyright office CP 401 : 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 2020 - All rights reserved