ASTM D7931-18
- Standard Guide for Specifying Drainage Geocomposites
- standard by ASTM International, 02/01/2018
- Category: ASTM
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1.1 This guide presents a guideline specifying a drainage geocomposite product; it specifically provides recommendations to determine the allowable flow rate of a candidate drainage geocomposite. The resulting value is then compared to a required (or design) flow rate for a product-specific and site-specific factor of safety.

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