Does anyone have advice on how to construct a concrete slab to hold a hot tub and sauna.
I'm interested in how thick to make the slab, are ground beams required, how to prepare the ground, what type of steel reinforcement to use.
I live in Melbourne, Australia, so it never freezes, but the soil is high in clay. The slab will be about 6m x 4m and I will pave it with slate or sandstone tiles and I'd lijke to do as much as possible myself.
Thanks in advance for your replies.