Here's my 10 Gallon setup
2 HD GOTT coolers, and a 15 Gallon brew pot.
The brew pot sits high enough that it flows down into the fermenter as well.
took me a day and a half of construction, but really happy with the result and I can use it as a shelf for all this brew gear in the garage.
Constructed out of:
8 of the 8ft 2x3s
left over 5/8 pressure treated deck wood (about 5 8ft long boards)
100 of 2.5 inch deck screws
100 1 5/8s deck screws to attach the decking.
16 bolts 4" long (to go through 2 of the 2x3s) with nuts and washers. **don't forget the boards are neither 2" nor 3" they are more like 1.5x2.5 or something
I used the remaining scraps of 2x3 4 pieces about 15" long to make diagonal braces inside the top and middle shelves. Maybe it's overkill but those coolers are heavy when full, and the wood was going to go to waste if I didn't use it.
I may add some concrete board or flashing under the burner, and between the burner and the propane tank, not sure it's needed.