The steel grid for reinforcing Tilt-Up panels is typically tied in-place after the side forms are erected. Standard Grade 40 or 60 bars are used. The use of plastic support chairs instead of steel chairs is recommended to avoid rust on the panel face. If steel chairs must be used, use a type that is plastic-tipped.
Check to make sure the tips are in place just before the pour. If insulated panels are used or the pour is on a sand bed, use chairs with sand feet. The weight of the steel can force a standard chair foot into the sand or insulation.
Use the correct chair height to maintain the proper depth of the reinforcing.
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