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Pavement settlement on top of MSE wall and wall settlement

Pavement settlement on top of MSE wall and wall settlement

Pavement settlement on top of MSE wall and wall settlement

(OP)
I'm doing my research on MSE wall (Highway project) for Masters degree.

My questions are as follows:
Is there any criteria about the tolerance of pavement settlement paved on top of MSE wall?
Is there any criteria about the tolerance of settlment of foundation soil under MSE wall?

I read through the retaining wall section of AASHTO Specifications and FHWA manual (FHWA-NHI-00-043) but I was not able to find any criteria about them.
Thank you in advance for your help.

RE: Pavement settlement on top of MSE wall and wall settlement

     Settlement tolerance would be a function of what the highway authority would accept and the worse case would be approaching rigid bridge abutments.  Gently undulations might not be a concern - but point this out to them before construction - they can always make up such undulations in routine mill and replace mainteance.
     As for the settlement of the ground, I have experienced more than 800mm of settlement during construction of MSE walls.  See some other threads in this or similar groups.  Also you may wish to contact RE Company - they have a brochure that talks of settlements - use of slip joints, etc.
cheers

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