/diy/ - Do It Yourself

>>1225944
Not viable unless you get tall rebar in there going as high as the concrete is to be deep, and a selection of circular rebars welded to it, but after that it's a pretty good idea, pic related. You could throw the reinforcing structure together on site, and make it higher if necessary while it's still sticking out of concrete. Problem is you can't make the bottom walls thicker than the top without making big modifications to the cast, so you'd either have collapsing walls at the bottom or super thick walls at the top if you go deep.

Maybe you could weld a rebar ladder to the top of the reinforcing structure that spans the whole reinforcing structure's height so you can get down to the bottom regardless of the downward progression? It would have to overhang the wooden cast, so maybe it would have to be reinforced from multiple sides.