Footings for shed

[Millwright]

If I were to build a brick shed in my garden, how deep and how wide would any footings need to be?

How deep should the floor be?

Thanks.

 

[wakey77]

depends on the ground and size of the shed.
for single skin brickwork I'd go 600mm deep x 400mm wide minimum with a concrete depth of around 300mm.
pad depth 75mm laid on 1200g membrane on 50mm sand blind on 150mm hardcore whackered
for cavity wall I'd go 500mm wide with a 75mm cavity.

 

[Millwright]

That's quite a lot. I'm thinking of a 3m x 2.5 shed.

What do you think it would cost to have someone to the footings and base for me? I've had enough of digging and concreting, so not interested. I don't mind laying the bricks though and doing the roof.

 

[freddiemercurystwin]

300mm deep is over the top, do them 150 deep and just go down to firm earth. You've still not said if single skin or cavity wall?

 

[Millwright]

Single skin will do, it's not going to be heated.

Out of interest would I need to go deeper if double skin? I assume so due to the extra weight.

 

[freddiemercurystwin]

No, its a shed, keep it simple. So long as you hit firm earth you'll be fine. It may be more economical/easier to fill your concrete up to a depth just below ground level, rather than faffing about building blockwork in the trench.