im pretty sure that was Dudley's idea. after i built mine , he posted using PVC. i don't know how he anchored them. i guess the bucket would do the trick. i would drill some holes in the pipe , put rebar through , then fill with concrete. he filled the whole pipe with concrete , left foot or so shy , built the framing , then topped of with concrete. the PVC will last for ever. when i did the drains in my house i used the black pipe. i think that would look a little nicer then white.
