IS 16362 : 2024 Geosynthetics - Geotextiles for Subsurface Drainage, Subgrade Separation, Subgrade Stabilization, Filtration and Erosion Control (In Hard Armor Systems) Applications - Specification
(Amalgamating IS 15910 : 2010, IS 16391 : 2015, IS 16392 : 2015, IS 16393 : 2015)
1 SCOPE
This standard specifies general and performance requirements for geotextiles made from polyolefins, polyesters or polyamides material used in:
a) subsurface drainage, subgrade separation, subgrade stabilization, erosion control applications (in hard armor systems); and
b) separation/filtration application in railway formation on top of subgrade or prepared subgrade before laying blanket or anywhere within the embankment or used below the ballast and above the blanket layer.
NOTES
1 This is a material specification and design review of its use for intended applications is recommended. Subsurface drainage and filtration, separation, stabilization, and erosion control (in hard armor systems), are site specific design issue which should be addressed by engineer in charge. The engineer should address the following specifics:
i) Subsurface drainage - geotextile type, structure and associated details, shall be as shown on the contract drawings;
ii) Subgrade separation - geotextile type, cover material thickness, pavement crosssection and associated details, shall be as shown on the contract drawings;
iii) Subgrade stabilization - geotextile type, cover material thickness, pavement crosssection and associated details, shall be as shown on the contract drawings; and
iv) Erosion control in hard armor systems - geotextile type and thickness, slope steepness, fill thickness and associated details, shall be as shown on the contract drawings.
2 This specification is not applicable for embankment reinforcement where stress conditions may cause global failure.
3 This standard and specification are based on the minimum requirements of the geotextile to provide drainage, filtration, erosion control, stabilization, and survivability during installation. The physical properties listed in Table 2 and Table 3 are applicable for a minimum backfill thickness of 150 mm. However, in general, the geotextile shall be placed as detailed in contract drawing. Unless otherwise specified in the project specification, the contractor shall follow the construction/installation guidelines in the relevant Indian Standard.
4 Additionally, the specification includes default geotextile selection criteria related to erosion control in hard armor layer for varying severity conditions of armor layer stone weights and drop heights, with or without an aggregate bedding layer:
a) Armor layer stone weights do not exceed 100 kg, stone drop height is less than 1 m and no aggregate bedding layer is required; and
b) Armor layer stone weights exceed 100 kg, stone drop height is less than 1 m and the geotextile is protected by a 150 mm thick aggregate bedding layer designed to be compatible with the armor layer.
2 REFERENCES
The standards listed in Annex A contain provisions which through reference in this text, constitute provisions of this standard. At the time of publication, the editions indicated were valid. All standards are subject to revision and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent edition of these standards.
| IS No. | Title |
| IS 667 : 1981 | Methods for identification of textile fibres (first revision) |
| IS 1070 : 2023 | Reagent grade water - Specification (fourth revision) |
| IS 1954 : 2024/ISO 22198 : 2006 | Textiles - Fabrics - Determination of width and length (third revision) |
| IS 1966 (Part 2) : 2022/ISO 13938-2 : 2019 | Textiles - Bursting properties of fabrics: Part 2 : Pneumatic method for determination of bursting strength and bursting distension (third revision) |
| IS 13162 | Geotextiles - Methods of test: |
| (Part 2) : 1991 | Determination of resistance to the exposure of ultraviolet light and water (xenon-arc type apparatus) |
| (Part 4) : 1992 | Determination of puncture resistance by falling cone method |
| IS 13321 (Part 1) : 2022/ISO 10318-1 : 2015 | Geosynthetics - Part 1 : Terms and definitions (first revision) |
| IS 14293 : 1995 | Geotextiles - Method of test for trapezoid tearing strength |
| IS 14294 : 1995 | Geotextiles - Method for determination of apparent opening size by dry sieving technique |
| IS 14324 : 1995 | Geotextiles - Methods of test for determination of water permeability - permittivity |
| IS 14706 : 1999 | Geotextiles - Sampling and preparation of test specimens |
| IS 14714 : 1999 | Geotextiles - Determination of abrasion resistance |
| IS 15060 : 2018/ISO 10321 : 2008 | Geosynthetics - Tensile test for joint seams by wide-width strip method (first revision) |
| IS 16078 : 2013/ISO 12236 : 2006 | Geosynthetics - Static puncture test (CBR test) |
| IS 16342 : 2015 | Geosynthetics - Method of test for grab breaking load and elongation of geotextiles |
| IS 16343 : 2015 | Geosynthetics - Guidelines for installation of geotextiles as pavement fabric |
| IS 16344 : 2015 | Geosynthetics - Guidelines for installation of geotextile for permanent erosion control in hard armor systems |
| IS 16345 : 2020 | Geosynthetics - Guidelines for installation of geotextile used in subgrade separation in pavement structures (first revision) |
| IS 16363 : 2015 | Geosynthetics - Guidelines for installation of geotextile used in subsurface drainage application |
| IS 17179 : 2019/ISO 12958 : 2010 | Geotextiles and geotextilerelated products - Determination of water flow capacity in their plane |
| IS 17360 : 2020/ISO 13438 : 2018 | Geosynthetics - Screening test method for determining the resistance of geotextiles and geotextile-related products to oxidation |
| IS 17420 : 2020/ISO 10722 : 2019 | Geosynthetics - Index test procedure for the evaluation of mechanical damage under repeated loading - Damage caused by granular material (laboratory test method) |