compaction surcharge

[jiao]

In applying Canadian bridge code to the design of a retaining wall, there is a clause 6.9.3 on compaction surcharge. Are we supposed to consider this surcharge during construction stage only? or construction and service stages?

Thanks

 

[MSEMan]

Depends on whether the wall yields enough during construciton to releive the stresses. There is a paper written by Terry Ingold with the formulas etc. to determine the amount of "locked in" compaction stress on retaining walls.