ISO/TR 18228-4:2022

Design using geosynthetics — Part 4: Drainage

This document outlines the criteria for evaluating the available and the required flow rate of geosynthetics in various situations, provides a summary of the available laboratory testing, and lists the safety factors and reduction factors that can be applied to the parameters when designing using geosynthetics for drainage systems.

Conception utilisant des géosynthétiques — Partie 4: Drainage

General Information

• Status: Published
• Publication Date: 14-Mar-2022
• 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-Mar-2022
• Completion Date: 15-Mar-2022

Standards Content (Sample)

TECHNICAL ISO/TR
REPORT 18228-4
First edition
2022-03
Design using geosynthetics —
Part 4:
Drainage
Design pour géosynthétiques —
Partie 4: Drainage
Reference number
ISO/TR 18228-4:2022(E)
© ISO 2022

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ISO/TR 18228-4:2022(E)
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ii
  © ISO 2022 – All rights reserved

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ISO/TR 18228-4:2022(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms, definitions and symbols . 1
3.1 Symbols and abbreviations . 1
4 Concepts . 6
5 Applications .8
6 Materials . 9
6.1 Components of draining geocomposites . 9
6.2 Filter Component of draining geocomposites . 9
6.3 Drainage cores . 10
6.4 Definitions and acronyms for the various products . 10
7 Properties relevant to design .10
8 Darcy’s law.10
9 Subsurface drainage structures .11
10 Geosynthetic properties .11
11 Geotextile filter performance and filter criteria .12
12 Geocomposite drainage systems design.12
12.1 General .
...