2.0m Accoustic Fence Behind Segmental Retaining Wall

[jaggars]

I have a situation whereby the architect has proposed 8.0 ft Acoustic fence behind Segmental Retaining Wall. Basically, its a Berm Application whereby wall sits in front of a berm. The grade difference at top of the berm is 3.0 and the wood fence is right behind the wall. The client has reject a geogrid wall design option since the berm has a reverse backward slope above the wall they want to a Gravity wall as an option for this application.
I am wondering if i go as a gravity wall this high do i have to account for some load being translated from wood fence post to the retained soil and in turn on to the wall. I haven't seen the design drawing for acoustic fence typically their foundation would be sonotube about 6.0 to 8.0 ft high and (300mm dia) which under wind loading might deflect and apply additional active pressure behind wall.
My question is i am looking for some references on how to account for this additional wind loads behind the wall which are imposed by fence essentially for both the type of design Gravity wall or Geogrid wall.

Thanks for suggestions

 

[kslee1000]

Link below refer to a recent thread for the similar subject.

http://www.eng-tips.com/viewthread.cfm?qid=242873&page=1