ASTM D7702-13
Historical Standard: ASTM D7702-13 Standard Guide for Considerations When Evaluating Direct Shear Results Involving Geosynthetics
SUPERSEDED (see Active link, below)
1. Scope
1.1 This guide presents a summary of available information related to the evaluation of direct shear test results involving geosynthetic materials.
1.2 This guide is intended to assist designers and users of geosynthetics. This guide is not intended to replace education or experience and should only be used in conjunction with professional judgment. This guide is not intended to represent or replace the standard of care by which the adequacy of a given professional service must be judged, nor should this document be applied without consideration of a projects many unique aspects. Not all aspects of this practice may be applicable in all circumstances. The word Standard in the title of this document means only that the document has been approved through the ASTM consensus process.
1.3 This guide is applicable to soil-geosynthetic and geosynthetic-geosynthetic direct shear test results, obtained using either Test Method D5321 or D6243
1.4 This guide does not address selection of peak or large-displacement shear strength values for design. References on this topic include Thiel ( 33 ), Gilbert ( 12 ), Koerner and Bowman ( 16 ), and Stark and Choi ( 31 ).
1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
ASTM Standards
D653 Terminology Relating to Soil, Rock, and Contained Fluids
D4439 Terminology for Geosynthetics
D5321 Test Method for Determining the Coefficient of Soil and Geosynthetic or Geosynthetic and Geosynthetic Friction by the Direct Shear Method
D6243 Test Method for Determining the Internal and Interface Shear Resistance of Geosynthetic Clay Liner by the Direct Shear Method
Keywords
angle of friction; coefficient of friction; direct shear; GCL; interface shear resistance; performance test; secant friction angle; shear resistance; Mohr-Coulomb friction angle;
ICS Code
ICS Number Code 59.080.70 (Geotextiles)
DOI: 10.1520/D7702-13
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