Originally Posted by
markk
Take one average sized rear garden..................................
add in one of these....
and one of these
=
how much concrete do you have to put in footings then ?
the ground works are 900mm deep in most cases, and is 10m x 8m
the deal is i have a builder who is doing the job on a labour only basis, so im providing the materials, so im trying to decide on the amount on concrete I need to use firstly for the footings and secondly on the base.
any ideas?
i would say 7.2m3 of concrete for the footings which i would use a 1.3.6 mix or gen 2 at about 60 slump this will make it nice and easy to gat a good level and a p320 / p330 mix with fibres for the slab at 6" deep which should be about 1.2m3 again 50 / 60 slump , if you go for mesh a252 will be more than enougth [ if so use a 50/60mm spacer to keep the mesh of the floor ] but if you add fibres it will make it bullet proof and only cost about £5.00 more a m3 . i see you are in lancashire ? if so let me no what materials you need as i am a manager of a builders merchant in burscough with plenty of branches around and i could poss help out with any problems or materisl
cheers fella and good luck