Here in Ireland, we call the plywood forms used for pouring concrete "shuttering". I always thought shutters went on either side of a window, but live and learn.
I used stakes to hold the shuttering -- while it worked out OK in the end, they were a real pain to get in where I wanted them and to get them tight. Looking back, I think some 15" pieces of 1/2" rebar would have done much better (the stakes tend to go off course as you're hammering them in). I was also staking into the topsoil just outside the circle I had dug, so the soil wanted to push into the hardcore filling the hole. Longer rebar could have gone straight down through the hardcore and into the dirt below it.
Lesson #2: don't cut your steel with an angle grinder over the plastic. The sparks burn little holes right through. I had to re-sheet part of it.
(If you look really closely, you can also see where the crows pecked out the top 1/2" of styrofoam isolation. :S )
Anyway, here it is, ready to go:
I used stakes to hold the shuttering -- while it worked out OK in the end, they were a real pain to get in where I wanted them and to get them tight. Looking back, I think some 15" pieces of 1/2" rebar would have done much better (the stakes tend to go off course as you're hammering them in). I was also staking into the topsoil just outside the circle I had dug, so the soil wanted to push into the hardcore filling the hole. Longer rebar could have gone straight down through the hardcore and into the dirt below it.
Lesson #2: don't cut your steel with an angle grinder over the plastic. The sparks burn little holes right through. I had to re-sheet part of it.
(If you look really closely, you can also see where the crows pecked out the top 1/2" of styrofoam isolation. :S )
Anyway, here it is, ready to go:
Attached Image:
