This gang form system is all steel and requires no stiff-backs. These panels come in 12'0" long sections and arrive at the jobsite already set to the required inside and outside radius. The system uses a reusable taper tie and 3/4" speed bolts for panel and accessory bolting. Accessories include taper ties, top ties,end ties, lifting eyes, pipe brace aligners,scaffold brackets, and assembly bolts. Allowable pour pressure: 1200 lbs/SF.