F. WINDOW, DOOR & OTHER OPENINGS
We recommend using VBuck® for forming the block outs for doors and windows. VBuck® is a vinyl forming material designed specifically for SmartBlockPlus and other ICF’s and is a selfsquaring, stay-in-place buck system that eliminates a significant amount of labor and waste and significantly improves the look of your project and the ease of installing your doors and windows. VBuck® is readily available for the 20,32 cm y 25.40 cm. SmartBlockPlus. Larger sizes are available by special order.
If you choose to use lumber to form your openings, it may be required to use wood that is pressure treated or covered with a felt material to prevent direct contact with the concrete. You must also use lag screws, ring shank nails, or anchor bolts to secure the buck back to the concrete.
Window and door bucks should be constructed to the rough opening dimensions required for the windows and doors, measuring from the inside face of the buck material used.
Be sure to consult the manufacturer’s specifications for the dimensions required. Place the bucks around the perimeter of the job site so that they are readily available for installation at the proper location.
All bucks require internal bracing to support the weight and movement of the concrete. VBuck® utilizes a triangular brace (the VBrace), which is secured on both sides of each corner with screws in pre-drilled holes. These braces also help ensure that the buck is square. For larger openings, additional vertical and/or horizontal bracing may be required.
Wood bucks require the same type of bracing, which can be constructed with an internal angled piece of lumber, or an external diagonal piece of 2x4 running across the face of the buck to hold it in place. Larger openings will also require additional vertical and/or horizontal internal bracing.
At this time, all openings for utility access into the building should be cut and sleeved with PVC or steel pipe. Large openings will also require additional vertical and/or horizontal internal bracing.
|