ISO/TR 18228-3:2021

Design using geosynthetics — Part 3: Filtration

This document provides general considerations to support the design guidance to geotechnical and civil engineers involved in the design of structures in which a geotextile is used as a filter. The key potential failure mechanisms are described, and guidance is proposed to select engineering properties.

Conception utilisant des géosynthétiques — Partie 3: Filtration

General Information

• Status: Published
• Publication Date: 14-Jun-2021
• ICS: 59.080.70 - Geotextiles
• Technical Committee: ISO/TC 221 - Geosynthetics
• Drafting Committee: ISO/TC 221/WG 6 - Design using geosynthetics
• Current Stage: 6060 - International Standard published
• Start Date: 15-Jun-2021
• Completion Date: 15-Jun-2021

Standards Content (Sample)

TECHNICAL ISO/TR
REPORT 18228-3
First edition
2021-06
Design using geosynthetics —
Part 3:
Filtration
Design pour géosynthétiques —
Partie 3: Filtration
Reference number
ISO/TR 18228-3:2021(E)
©
ISO 2021

---------------------- Page: 1 ----------------------
ISO/TR 18228-3:2021(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2021
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 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: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii © ISO 2021 – All rights reserved

---------------------- Page: 2 ----------------------
ISO/TR 18228-3:2021(E)

Contents Page
Foreword .iv
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms, definitions, symbols and abbreviated terms . 1
3.1 Terms and definitions . 1
3.2 Symbols . 1
3.3 Abbreviated terms . 2
4 Concepts and fundamental principles . 2
4.1 General . 2
4.2 The filtration function of geotextiles. 3
4.3 Filter selection fundamentals. 4
5 Typical applications . 4
5.1 General considerations . 4
5.2 Soil filtration . 5
5.3 Slurry filtration . 5
6 Materials . 5
7 Functional properties relevant to design . 8
7.1 Characteristic opening size . 8
7.2 Velocity index and permittivity (per
...

TECHNICAL ISO/TR
REPORT 18228-3
First edition
Design using geosynthetics —
Part 3:
Filtration
Design pour géosynthétiques —
Partie 3: Filtration
PROOF/ÉPREUVE
Reference number
ISO/TR 18228-3:2021(E)
©
ISO 2021

---------------------- Page: 1 ----------------------
ISO/TR 18228-3:2021(E)

COPYRIGHT PROTECTED DOCUMENT
© ISO 2021
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 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: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii PROOF/ÉPREUVE © ISO 2021 – All rights reserved

---------------------- Page: 2 ----------------------
ISO/TR 18228-3:2021(E)

Contents Page
Foreword .iv
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms, definitions, symbols and abbreviated terms . 1
3.1 Terms and definitions . 1
3.2 Symbols . 1
3.3 Abbreviated terms . 2
4 Concepts and fundamental principles . 2
4.1 General . 2
4.2 The filtration function of geotextiles. 3
4.3 Filter selection fundamentals. 4
5 Typical applications . 4
5.1 General considerations . 4
5.2 Soil filtration . 5
5.3 Slurry filtration . 5
6 Materials . 5
7 Functional properties relevant to design . 8
7.1 Characteristic opening size . 8
7.2 Velocity index an
...