My plastics are just fine with the jaws pipe. But I’m not a flippity flip flop slam the sled on its left side every 10’ rider so maybe that’s difference….
24x24 you can go slab on grade and won’t need a foundation. You should thicken the outside 2’ of your pad and extra row of rebar around the outside perimeter. If you go larger you would need a foundation probably for the proper permitting. Can’t help you out with pricing been awhile since we...