First, I had considered concrete slab for out hot tub but the price of concrete is crazy in our area. For our new hot tub I am considering a base made from a few inches of pea gravel topped with 1-2" of sand then concrete pavers. Holding it all in I was thinking of 4"x4" pressure treated wood. Is 4x4 sufficient or should I use something else?
For an 8' tub, is the 3" of gravel, 2" sand and pavers sufficient? Or do the depths need tweaking at all?
Thanks.