One more important feature of the Superform tie is the re-bar slot, which holds rebar where it is intended to stay, without the possibility of it being pushed to the side. There are three slots per tie, one on either side, 30mm from the edge of the concrete, and one in the center, for versatility in rebar placement.

Rebar Placement B. Notice rebar placement. Usually staggered from one row of block to the next row. A. Notice how the blocks join together. This system is tight and prevents leakage during pouring of concrete.

Reinforcing
Horizontal rebar (either 10mm or 15mm) is placed every 12" or 24" vertically, and at whatever spacing is necessary for vertical rebar (if any), according to backfill height and other site conditions, such as height of wall and floor system support. Generally, an eight-foot wall will have 5 or 6 horizontal rows of 10mm reinforcement, and vertical bars at 24” spacing only where backfill is higher than 6 feet. Vertical bars are required at the sides of all openings.