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BS 8661:2019

BS 8661:2019

$102.76

Geotextiles. Guidance for specification for basic separation and filtration functions

Published By Publication Date Number of Pages
BSI 2019 16
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This British Standard gives recommendations and guidance for the choice and specification of geotextiles for the functions of separation and filtration in contact with natural soils and fills. This British Standard provides information for various applications and service lives.

This British Standard is not applicable to geocomposite geosynthetic products which incorporate a geotextile component covered by this standard.

PDF Catalog

PDF Pages PDF Title
4 Foreword
5 1 Scope
2 Normative references
3 Terms and definitions
6 4 Separation and filtration
4.1 Definition of the site conditions
Table 1 — Subsoil classes
7 Table 2 — ESALs for a range of vehicles travelling on unbound layers
4.2 Selection of the geotextile specification profile
8 Table 3 — Selection of geotextile specification profile
4.3 Mechanical recommendations for separation
9 Table 4 — Recommendations for mechanical characteristics of high-extension geotextiles
Table 5 — Recommendations for mechanical characteristics of low-extension geotextiles
4.4 Hydraulic recommendations for separation with insignificant filtration
10 Table 6 — Recommendations for the characteristics for separation with insignificant filtration
4.5 Hydraulic recommendations for separation with filtration
Table 7 — Recommendations for separation with filtration
4.6 Consideration for separation with critical filtration
11 5 Quality assurance
5.1 Construction quality assurance
5.2 Documentation to be provided and checked
5.3 Site sampling and testing
12 Table 8 — CQA testing and frequencies for geotextiles
6 Construction recommendations
6.1 General
6.2 Site preparation
6.3 Geotextile placement
6.4 Initial layer thicknesses
Table 9 — Minimum initial layer thickness
13 6.5 Overlap recommendations
6.6 Working over placed geotextiles
7 Service life
14 Bibliography

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BS 8661:2019
$102.76