Im building a large shed in garden 4800 x 3600 mm base the top soil is quite loose clay about 300 mm down Im going to build a timber basr using joists and floor boards whats best support for joists a slab with mesh erected on top of the soil or two or three ground beams running 4800 mm ie along front middle and rear of shed base plus concrete blocks to raise it above ground how many bags of cement plus chippings wouls i need per cubic meter of concrete i have to mix by hand as access is bad thx urbantus
Tell the truth about your "shed" mate, we are all friends here. No-one will grass you up if all sounds ok.
Sorted out how much concrete etc But need some help The shed is goint to bequite heavy The ground is shrikable clay Will two strip foundations 3.6 m apart be ok to support the shed Im going to make them 4.8 m long 0.45 m wide What depth do you think I should make them As the timbers are spanning 3.6 m should I use 9x3s for the floor Thx Urbeh
sorry old chap but your idea sucks... you need to cast a full sized slab...6" thick, embedded with rebar
Im gonna go with the slab idea The ground at the mo is very dry and digs up like dust Im gonna dig down to harder ground and put in some scalpings then 150 mm concrete with mesh reinforcing in it i might still lay some concrete blocks on top of slab to raise joists up a bit am i heading in the right direction urbeh
If you're putting a slab in, why bother with the joists and timber floor? Just use the slab as the floor.
If you're putting a slab in, why bother with the joists and timber floor? Just use the slab as the floor. Yep.
Im going to make it really cosy for sleep overs etc going to insulate the floor roof and walls thats why I want joists and timber floor urbeh the shed dweller
I have a problem casting the slab The top soil is 550 mm deep before clay Theres a really big laylandii tree a meter away from the new slab area Do I need to take the tree down Do I need to dig down into the clay If so how deep Urb
We're talkin about a freaking shed here chaps!! Excavate 300mm, put down and compact 150mm hardcore, blind it with sand, then yer 150 mm concrete. We did my mate's shed/workshop about 6 years ago ( 6.5m x 4m ). We dug out about 250mm, put down 150mm Type 1 MOT, then 50mm grit sand/cement and covered with some old 50mm 3x2's and 2x2's and the shed sits on some old railway sleepers. In that time not a single flag has moved. Basically, what I'm saying is to use common sense. There's no point over-engineering the project.
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