Bottom (sill) Plate

SIP walls shall have full bearing on pressure treated sill plates each having a width equal to the nominal width of the SIP core. When structural insulated wall panels are supported directly on continuous foundations in accordance with Figure 4.8, the wood sill plate at exterior walls on monolithic slabs and wood sill plates shall be anchored to the foundation with anchor bolts spaced a maximum of 6 feet (1,829 mm) on center. There shall be a minimum of two bolts per plate section with one bolt located not more than 12 inches (305 mm) or less than seven bolt diameters from each end of the plate section. Bolts shall be at least 1/2 inch (12.7 mm) in diameter and shall extend minimum of 7 inches (178 mm) into masonry or concrete. Foundation anchor straps, spaced as required can be used to provide equivalent anchorage to 1/2-inch-diameter (12.7 mm) anchor bolts.

Interior bearing wall sill plates on monolithic slab foundations shall be positively anchored with approved fasteners. A nut and washer shall be tightened on each bolt to the plate.