Excavation depth for concrete floor?
Posted: Wed Sep 09, 2009 9:45 am
Hi there
Our building regs inspector has told us to use the following for out concrete floor
6 inches of hardcore, "then whacker it"
2 inches of sand "then whacker it"
Insulation (we have bought 100mm)
Damproof
4 inch concrete
3 inches screed. (my husband says this sounds like too much screed though? is 3 inches right?)
How much can we expect the hardcore to compress?
What is the total depth we need to excavate?
Thanks!
Our building regs inspector has told us to use the following for out concrete floor
6 inches of hardcore, "then whacker it"
2 inches of sand "then whacker it"
Insulation (we have bought 100mm)
Damproof
4 inch concrete
3 inches screed. (my husband says this sounds like too much screed though? is 3 inches right?)
How much can we expect the hardcore to compress?
What is the total depth we need to excavate?
Thanks!