Uni-strut Clips
uni-strut clip specs:
Part #USC-15
Drill two 1/4" dia. holes in the wall of the form, 1-7/8" on center about every 3 feet
Snap the clips over the Uni-Strut and pound directly into the 1/4" holes
Once the vault is lifted from the form, simply punch the break-away portions through the form with a hole punch