B - Quad-Lock Building Systems

General Hot Weather Concreting Guidelines
• Pour early in the morning to take advantage of cooler ambient temperatures.
• Spray a water mist over forms to help dissapate stored heat.
PRODUCT MANUAL
• Avoid build-up of concrete on hot rebar by vibrating rebar between lifts, or bypassing upper rebar by pouring from
side of wall.
• “Site-mix” concrete that must be transported long distances (or in heavy traffic).
• Keep plasticizer or set-retarder on site for emergencies.
• Order chilled water or ice added to the mix at the batch plant, if available.
• Use placement techniques and slump that will allow the fastest practical placement of concrete.
REINFORCING STEEL (REBAR)
The Quad-Lock system has been designed to accommodate horizontal reinforcing steel placement in the molded “rebar
chairs” on the Quad-Lock Ties. The system is ideally suited for even 12" [30cm] increments on the horizontal plane.
Vertical reinforcing steel of almost any spacing can be accommodated in the Quad-Lock System. The design and
placement of reinforcing steel in the Quad-Lock System should be in accordance with acceptable reinforced concrete
standards and/or needs to be designed by a professional structural engineer. Some reinforcing steel design guidelines
can be found in Appendix A and prescriptive reinforcing designs can be found in the IRC (USA), the NBC (Canada) and
other national building codes.
If permitted by the local authorities and engineer of record, a quick and easy method of setting vertical reinforcing steel is
to drop it down within the Quad-Lock Ties and between the staggered horizontal rebar as shown below. If permitted, 1¼"
– 1½" [32mm-38mm] diameter plastic pipe may be used to secure vertical rebar to rebar dowels in the footing.
Figure 117: Typical Lap Patterns at Corners & T-Walls
Building Tips: If the specified spacing for horizontal bar is not a 12" [305mm] increment, contact the project engineer
and request a change.
From the building plans, pre-plan the layout of the horizontal and vertical steel. Pre-cut pieces off-site
and have them delivered. This includes horizontal steel, vertical steel and 90° bends.
To secure vertical rebar (and if permitted by building officials), cut short (4" [102mm]) pieces of plastic
pipe 1¼" to 1½" [32 to 38mm] in diameter and drop them over the rebar stubs that are sticking up out of
the footing. Do not place the vertical steel at this point. Build the Quad-Lock wall, placing horizontal steel
only as you build. When the wall is at the desired height, slip pre-cut vertical rebar into the plastic pipe
next to the stub steel, and secure at the top of the wall.
Page 126 Chapter 6 – Concrete & Rebar July 2009