Engineering Specs

There are several specifications available for geosynthetic materials and applications. Here are a few of the most commonly reference specifications and organizations:

AASHTO/NTPEP program
Geosynthetics used in U.S. transportation application are tested by the AASHTO/NTPEP program.

Committee D35 on Geosynthetics
Geosynthetic materials are tested using test method standards created by the Committee D35 on Geosynthetics of ASTM.

Design Manual for Segmental Retaining Walls
Specifications for geogrids used in Segmental Retaining Walls are found in the Design Manual for Segmental Retaining Walls.

Generic specifications
Geosynthetic materials used in routine applications are easily specified by using generic specifications such as AASHTO M288 and FHWA FP-03

Geomembrane specifications
Geomembrane specifications have also been developed by the Geosynthetic Institute.