ISO INTERNATIONAL STANDARD 17892-11 First edition 2019-01 Geotechnical investigation and testing - Laboratory testing of soil - Part 11: Permeability tests Reconnaissance et essais géotechniques-Essais de laboratoire sur lessols- Partie11:Essaisdeperméabilité Reference number ISO 17892-11:2019(E) @IS02019 IS0 17892-11:2019(E) COPYRIGHTPROTECTEDDOCUMENT @ISO2019 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 the internet or an intranet, without prior written permission. Permission can be requested from either IsO at the address below orIso's memberbody in the countryof therequester. ISO copyright office CP 401 : Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone:+41227490111 Fax:+4122749 09 47 Email: copyright@iso.org Website: www.iso.org Published in Switzerland ii @ IS0 2019- All rights reserved IS0 17892-11:2019(E) Contents Page Foreword ..iv Introduction.. ... 1 Scope. 2 Normative references 3 Terms and definitions 4 Symbols ..2 5 Apparatus. .3 5.1 General. 3 5.2 Permeameters. .3 5.2.1 General .3 5.2.2 Rigid wall permeameters .3 5.2.3 Flexible wall permeameter .5 5.3 Porousdiscs 7 5.4 Permeantwaterproperties 7 5.5 Measurement and controldevices. .7 5.5.1 Elevation head. 7 5.5.2 Displacementandvolumemeasuringdevices .7 5.5.3 Flowvolumemeasurementdevice .7 5.6 Ancillary apparatus. .8 6 Testprocedure .8 6.1 Generalrequirements .8 6.1.1 Saturation.. ..8 6.1.2 Hydraulic gradient 6.1.3 Water temperature .9 6.2 Specimen preparation 6.2.1 General 9 6.2.2 Rigid wall permeameter .9 6.2.3 Flexible wall permeameter .10 6.3 Test preparation. .10 6.3.1 Cylindricalpermeameter .10 6.3.2 Oedometer ring .10 6.3.3 Flexible wall permeameter .11 6.4 Permeabilitymeasurement. .12 6.5 Dismounting .14 7 Test results. ..14 7.1 Bulkdensity,dry density,water content and degree of saturation ..14 7.2 Coefficient of permeabilityand hydraulicgradient ..14 7.3 Correctionfortesttemperature .15 8 Test report. .16 8.1 Mandatory reporting .16 8.2 Optional reporting. .16 Annex A (normative) Calibration, maintenance and checks ..17 Bibliography .20 @IS0 2019-All rights reserved ili