Raised Garden Beds out of Concrete Blocks?
I want to build raised garden beds with the walls being made out of concrete cinder blocks. Want the beds to be about 2 1/2' above ground and about 3' to 4' wide. I also want to make basically concrete counter tops to put on top (or benches).
My question is .. how many inches can the top go beyond the concrete cinder block frame without having to add braces for the bench?
Ex: if I use 6" wide cinder blocks .. and fill the holes with rebar and concrete .. what is the overhang I can have on the bench top?