Posted: Sun Apr 02, 2006 11:35 pm
Hi I am looking to dig foundations for a 8x4m garage and require some info on how best to prodeed.
Using 440x215*200 blocks I was planning to dig and fill foundations 0.45 wide to a depth of 0.4m, this brings me down into the subsoil hard base. Then start block work from here and build up from there about 2 courses, install the Damp Course 0.15m above intended floor level, and then flood the internal area with concrete to create the slab floor(May use rebar over this area). Will it be ok to dig the slab area out to a depth of approx 0.3m then fill a subbase of 0.15m, and then concrete of 0.15m onto this? My concern is that the subase will be going onto a layer of topsoil, as there would be a huge amount of infill if I was to dig the whole area down to subsoil.
I look forward to your suggestions.
Using 440x215*200 blocks I was planning to dig and fill foundations 0.45 wide to a depth of 0.4m, this brings me down into the subsoil hard base. Then start block work from here and build up from there about 2 courses, install the Damp Course 0.15m above intended floor level, and then flood the internal area with concrete to create the slab floor(May use rebar over this area). Will it be ok to dig the slab area out to a depth of approx 0.3m then fill a subbase of 0.15m, and then concrete of 0.15m onto this? My concern is that the subase will be going onto a layer of topsoil, as there would be a huge amount of infill if I was to dig the whole area down to subsoil.
I look forward to your suggestions.