Pouring a slab foundation (4x4m) yourself: Is a concrete mixer suitable?

Ask the screed layer about it, they like to do small quantities on site.

Otherwise, a 20cm floor slab is way too much of a good thing.

Old Swede … Garden house built with bricks? I have a wooden shed on compacted gravel

A 20cm base slab is standard for houses as far as I know. I think he wants to store heavy equipment, maybe excavator and truck parts? Certainly not wheelbarrows and garden tools.

That is 7.5 m3... 18 tons....

And with that exactly one concrete mixer. Get the offer.

And then from a building material dealer who dumps your driveway full of sand and delivers a pallet of cement....

If possible: concrete from the plant!

Before I process 18 tons of concrete for a 10sqm garden shed - and that's just for the foundation slab plus strip foundation/including insulation, foil, etc. - I would first think about what I actually need. The foundation is enough for a small rocket launch base; for such a mini garden shed it is more than oversized. What tools or equipment do you have in the shed that weigh several tons?

Hello,
first of all, thank you for all the responses.

What would be a good, cost-effective alternative if I want to build a 4x4 device shed made of Ytong or KS stone, in which heavy items will also be stored on the floor for longer periods in the future (especially heavy building materials, like stacked tile packages and roof tiles)? Is there an alternative to a concrete foundation if the device floor should easily support about 150 to 200 kg/m2?

Before I process 18 tons of concrete for a 10 sqm garden shed – and that only for the foundation slab plus strip foundation/plus insulation, foil, etc. – I would first think about what I actually need. The foundation is enough for a small rocket launch base; for such a mini garden shed, it is more than oversized. What tools or devices do you have in the shed that weigh several tons?

maybe he wants the base because of the cold war?