I would like to build a small free-standing treehouse without digging into ground and/or pouring concrete.
Here is what I have in mind:
It is, of course, for kids, so I don't think I need it to be able to support more than ~100kg (220lbs) with the reserve. I made it more wide than tall in order to reduce the instability, but what kind size poles I should need for to support both the overlying deck and house+roofing constructions + kids? [material is most probably pine for everything, as it is the only which is readily available, the blue timber is assumed to be pressure-treated]
The width of the house I had in mind around ~2.5m (8ft).