Friction coefficient for stone on geotextile?

[Pathos2000]

I am currently in the process of designing a slope stabalization system using geoweb. The material inside the geoweb will be AASHTO #7 stone for grounding purposes. I will be placing a non-woven geotextile underneath the geoweb to prevent piping. Now the problem is that in order to design the tendons that run inside the geoweb I would need the coefficient of friction for stone on geotextile. I can't find any friction coefficients with materials that are similar enough for me to use with confidence. If anyone can point me in the right directions I would appreciate it.

 

[geotechgal]

Try to contact the manufacturers for the geotextile, they might be of help. I know a friend who called them about some soil-geotextile interaction issues and got a positive response.

Let me know if this does not work out.