Garden house - What size and what kind of ground?

put some gravel/crushed stone (~10cm) in at the bottom, compact it, and then pour the foundations (30x30x30).

Why are you all always so stingy? 10cm of crushed stone is a bit too little, not to mention 30x30x30cm foundations. That's not much more than a bucket full, what is that supposed to hold? Concrete doesn't cost the earth, so at least double two of the three dimensions smoothly and sleep peacefully. Sometimes people here "fiddle around" and "botch things up" just to save 2 euros. Doesn't anyone build solidly anymore so you can have peace for many years? I'm more the other kind, everything a bit thicker, more stable, more. So I'd better spare you my version, which would probably meet with incomprehension here.

: For me, it’s all a question of what you put on the foundations! In my case, only a metal garden shed for lawnmowers etc. is going to be placed on the foundations. Of course, you can also go to 80cm, 20cm of gravel layer and a 60cm foundation on top. But that would be my approach for the proper garden house planned for next year. Foundations of 60x30x60 for a shed seem pretty exaggerated to me personally. Sure, you can also pour a reinforced slab, but one should keep things in perspective. I also want to say that the shed is placed on a leased plot of land (which we might be able to buy at some point, but currently he doesn’t want to yet, or we’re still waiting for the right time to gently inquire).

If it is only temporary, then okay, that is something different, I wouldn’t put too much effort into it either.

: Sure, you can also pour a slab with reinforcement

That’s my version…. 8m³ of concrete and a lot of steel ;-)

This is my version....8m³ concrete and lots of steel ;-)

For the proper log cabin, that is part of the consideration, but for the equipment shed, I simply think that point foundations should be sufficient. In my opinion, a slab foundation would be a bit much there.

I think I will raise the substructure to 20cm of gravel/sand. However, I would keep the foundation size as it is; the quantity is adjusted accordingly so that the OSB panels and the grid for the wood rest well.

One could also work in anchor sleeves or sleeves directly into the foundation and then freely plan and build the garden house with their own dimensions. This idea is currently my favorite, simply because I like to build, because I can adjust the dimensions exactly to my space, and because you can also build gradually.

One could also work in driven sleeves or sleeves directly into the foundation and then plan freely and build the garden house with own dimensions.

Then I would cast post shoes/post anchors into the pad foundations, as they are designed for that purpose. Driven sleeves can also work, but joist hangers would probably be the right choice. And of course, self-built has the advantage that you can determine the dimensions yourself.