concrete slab for summerhouse

by **olliejames** » Thu Apr 14, 2011 11:31 am

Hi there, my mate wants me to lay a concrete slab for summerhouse, its going to be 4 metres x 4 metres sq, what should be the depth of the hardcore and the depth of the concrete, how much material will i need thankyou hope you can help me

by **stokedan1** » Fri Apr 15, 2011 6:46 pm

Whats the ground like? if ground is bad dig off till you reach clay, build back up with hardcore cap off with 100mm of type 1 MOT, then a 150mm conc slab, if ground is good no need for hardcore.

MOT at 100mm = 3.84 ton
conc at 150mm = 2.4 cubic metres

Hardcore if needed depends on how much you have to dig out

by **stokedan1** » Fri Apr 15, 2011 6:57 pm

sorry mate forgot about visqueen on top of mot/under conc for damp protection

by **olliejames** » Mon May 02, 2011 11:24 am

stokedan1 wrote:sorry mate forgot about visqueen on top of mot/under conc for damp protection

Hi stokedan1 sorry for the delay in my reply thanks for the advise should be sound now cheers