Framing Connections
When possible, attach any intersecting wall framing to the IBS stud in the ThermoBlock wall system. In the event that this intersection point occurs at a vertical concrete column, embedded anchor bolts can be used. Should the wall intersection occur between the above-mentioned areas, a strip of plywood or a 1X4 can be routed into the surface of the foam and extend between adjacent IBS studs, screwed into the metal stud.
Bracing the Wall System
Bracing of any ICF wall system is critical. It should be noted that bracing needs to be of significant enough size and frequency to accommodate the weight of the grouted wall before cured. It should also be noted that in many ICF systems bracing the wall off a scaffolding system is the preferred method. This is not the case with ThermoBlock. Our patented IBS studs inserted in the wall during construction makes bracing the wall system much faster and simpler.
The preferred method to brace the ThermoBlock wall system is by utilizing a dimensional lumber such as a 2X4 screwed to the IBS studs at a point near the top of the section to be poured. This is called a strong back. Wood or metal lateral bracing is then attached with screws to this strong back and run at an angle to the ground around the outside of the building and secured with screws to wood or metal stakes. This leaves the interior of the building free to move rolling scaffold during the grouting process. This method allows the builder to run line blocks and string line each section of wall plumb and straight very quickly. It also eliminates the need to set up expensive scaffolding systems around the entire perimeter of the building, which is costly and time consuming. This translates to improved cost predictability and lower installed costs. ThermoBlock manufactures and rents a wall capturing and bracing system if desired.
Contact a certified installer in your area for more information before starting construction. All window and door bucks are braced in the same manner. Wall sections with many openings near the ends of the wall may require vertical bracing at corners. This is accomplished by screwing two pieces of 2X4 stock together lengthwise to form an “L” shaped corner the height of the wall. This should be placed over the wall corner on the outside and laterally braced in both directions.
Note that this brace must be attached to the concrete slab or footing at the framing when possible. If not possible, walls should be braced from top of each wall section.
FIGURE 8.1: Metal expandable bracing
FIGURE 8.2: wood (2×4) bracing