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Re:Static friction coefficient for stability check

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The American Society for Testing and Materials (ASTM) has a standard direct
shear test to determine the friction angle between soil and geosynthetics (such
as HDPE).  From my experience, it is for use in landfill slope stability
studies.  It is ASTM D 5321-92 in Volume 4.09 of the 1998 Annual Book of
Standards.  For a price, you can download the standard or have it FAXed to you
by contacting ASTM at

I would also guess that with a basement you should have an adequate amount of
passive resistance against the basement wall, to resist horizontal loading for
most cases.

Tom Benson at Lowney Associates, Pasadena, California, USA

____________________Reply Separator____________________
Subject:    Static friction coefficient for stability check 
Author: <seaint(--nospam--at)>
Date:       4/13/99 8:47 AM

Dear All

I'd like to know static friction coefficient between concrete or
fill and the waterproofing material ( Roof coating waterproofing or
sheets of synthetic polymer ) for stability check ( sliding ) of
basement which founded on the rock and membrane waterproofed.

We used the value 0.32 for design and request to test the static
coefficient to membrane supplier, but there are no standard test method.

Anybody know the test method of static friction coefficient between
concrete and granular fill and the membrane waterproofing?

Thanks advance.

Yangsoo Kim