B - Quad-Lock Building Systems

PRODUCT MANUAL
Any of these fasteners will yield a very secure fastening, and the act of drilling does not result in spalling of the concrete,
or curling of the fasteners. The low cost of these fasteners brings down the average installed cost as well. Concrete drill
bits are relatively low cost, and yield many holes for fastening. Hammer drills are commonly available for sale or rent.
Figure 30: Installation of Hit-Anchors
Method 3) Screw to Metal or Wood Cleats:
In cases where a concrete slab or footing is not available, Metal Track can be screwed to metal or wood cleats to provide
both proper spacing and lateral strength against form pressure. This may be the case with a monolithic pour of stemwalls
and footings. Place Metal Track on top of wood or metal cleats fastened across footing forms at 3 foot (1 m)
maximum intervals. Use self-tapping screws to penetrate Metal Track and into the cleat below.
Note: This method is probably not appropriate when forming over natural rock outcrops because the track will not
conform to the rough surface of the stone. In such cases, scribe the panels to match the profile of the stone,
then spray-foam them into place. Secure 2x bracing on both sides of the forms to resist form pressure
generated by concrete placement.
Flex Track is used for securing radius walls (see Radius Walls on Page 47).
Proper Spacing of Metal Track
Critical to maintaining the shape of the wall is the initial placement of the Metal Track at the bottom of the wall. Usually, a
chalk line is snapped to represent the outside perimeter of the building, or “building line”. Then, the outer row of track is
fastened down by any of the above means. The inside row of track can be located by one of three methods:
• Snap a second set of chalk lines using the outer line as a reference
• Fasten the outer row of track, then cut spacers that represent the inside cavity width of the wall, and use the
spacers to locate the inner track in relation to the outside track
• Fasten the outside row of track, then cut a template from plywood that represents the outside dimension of the
foam panels. Loose lay the inside track, then place the template over both tracks, putting tension against the outer
track. Slide the inside track against the template and fasten.
The third method seems to give the most accurate results. Some builders actually under-size the template by ⅛" [3mm],
to assure that no expansion occurs at the bottom of the wall where the highest concrete pressure exists.
Figure 31: Plywood Templates fit to Wall Dimension
July 2009 Chapter 2 – Design & Construction Details Page 25