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Groundwork & Foundations

What are the complications of building a big sectional shed on a slab foundation?

Anonymous user 03/03/2024 - 3.22 PM

I'm looking to build a sectional concrete shed (or two) to cover an area about 12'x24'. It's not practical to lay a concrete foundation, and I've seen smaller sheds built on slabs. I'm guessing that sectional structure that size might shift around, so I'm wondering if there's a way of ensuring it stays level and upright! (edited with more info.) The site is a listed garden with no road access, so there's no way to get heavy equipment in. We might prefer to build a group of small sheds rather than deal with complicated issues of a single larger shed.

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4 Answers

TM Drainage Solutions

Rating: 5 out of 5

Southport

A concrete shed would without doubt require footings of at least 2ft 6inch all around as per any brick extension footings are then filled with concrete to support a large concrete shed . Laying pacing slabs For a wooden structure is fine as long as the slabs are laid on concrete at least I1 inch thick. Laying a concrete shed onto slabs would cause the slabs to move

Answered10 June 2019

Anonymous user

Scrape back top soil , compact dust and stone 30 mm. fix a shuttering around perimeter, purchase some steel mesh , undersize by 100mm all around, mix or buy your concrete , spread your concrete over the base 75mm drop the steel mesh in place , add another 75mm concrete , tamp to a good Finnish, You have a floating concrete slab , I’ve built garages like this design.

Answered10 June 2019

Andrew Tregoning Construction

Rating: 5 out of 5

Redruth

I think if you build the shed walls in 4x2 stud walls the structure will be fine.and maybe a manufactured truss would do the job

Answered10 June 2019

Seam Construction

Rating: 5 out of 5

Warminster

You can put sheds on concrete raft foundation 150mm thick with 8mm steel mesh sheets

Answered13 June 2019