Abstract
A wealth of test data is available on the friction interface between geonets and other geosynthetics available from manufacturers, consulting engineers, third party agencies and owners of waste management facilities. However, these results can vary significantly, resulting in potential confusion for the designer. Since the geonet/geosynthetic interface is often the most critical, care must be taken to choose data correctly. Choosing an artifically high friction angle unintentionally erodes the safety factor. A lower than actual friction angle limits the design. This technical note examines friction angles of geonets and other geosynthetics. The variability of test results and how they relate to the test profile and to the shear box is also investigated.
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