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Discussion Starter · #1 ·
Currently looking at job for a client of mine,
He has an interlock driveway, set in screening and is beginning to sink and push over a same dry lay retaining wall, he would like the interlock lifted, concrete pad poured and the interlock ( maybe not the same stone but defo interlock)
The stones will have no mortar joints,
If we do concrete will this settle enough not the push over the retaining wall, the retaining wall is level with the driveway and drops to about 3' below. Forst line is low here, 4' don't do a lot of interlock, any advice would be great.
 

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The overwhelming majority of driveway / walkway problems stem from a less than adequate base and or base preparation and improper retainage.With all that said,to "re do" the paving surface without addressing the problems of base and retainage is just inviting problems down the road.


IMHO,it sounds like the most reliable fix would be: remove pavers and base,cut out existing soil so as to be able to assure base is a min.8-10".Prior to adding stone,install geotextile,6 " of two inch stone,compacted in lifts,4 "of 3/4" stone,another layer of geotextile, 1-2" bedding sand and then the pavers.

Wow! that is a lot! That is why it is seldom done. But,that is why the condition you are facing exists. There is never enough money to do it right but there is always enough money to do it twice.


If the base is not addressed / improved there will come a time it will need to be done thrice.
 
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