![]() Vertical insulation shall be expanded polystyrene insulation or extruded polystyrene insulation.The following R-values shall be used to determine insulation thicknesses required for this application: Type II expanded polystyrene (EPS)-3.2 R per inch for vertical insulation and 2.6 R per inch for horizontal insulation Type IX expanded polystyrene (EPS)-3.4 R per inch for vertical insulation and 2.8 R per inch for horizontal insulation Types IV, V, VI, VII, and X extruded polystyrene (XPS)-4.5 R per inch for vertical insulation and 4.0 R per inch for horizontal insulation. Insulation materials shall provide the stated minimum R-values under long-term exposure to moist, below-ground conditions in freezing climates.See Figure R403.3(2) or Table R403.3(2) for Air Freezing Index values.Greater values could be required to meet energy conservation standards. Insulation requirements are for protection against frost damage in heated buildings.Where continuous wood foundations in accordance with Section R404.2 are used, the force transfer shall have a capacity equal to or greater than the connections required by Section R602.11.1 or the braced wall panel shall be connected to the wood foundations in accordance with the braced wall panel-to-floor fastening requirements of Table R602.3(1).Stepped cripple walls shall conform to Section R602.11.2.The maximum anchor bolt spacing shall be 4 feet (1219 mm) for buildings over two stories in height.Interior bearing wall sole plates shall have anchor bolts spaced at not more than 6 feet (1829 mm) on center and located within 12 inches (305 mm) of the ends of each plate section where supported on a continuous foundation.Interior braced wall plates shall have anchor bolts spaced at not more than 6 feet (1829 mm) on center and located within 12 inches (305 mm) of the ends of each plate section where supported on a continuous foundation. ![]() Properly sized cut washers shall be permitted for anchor bolts in wall lines not containing braced wall panels. Plate washers conforming to Section R602.11.1 shall be provided for all anchor bolts over the full length of required braced wall lines except where approved anchor straps are used. ![]() ![]() In addition to the requirements of Section R403.1.6, the following requirements shall apply to wood light-frame structures in Seismic Design Categories D 0, D 1 and D 2 and wood light-frame townhouses in Seismic Design Category C. Sill plates and sole plates shall be protected against decay and termites where required by Sections R317 and R318. Interior bearing wall sole plates on monolithic slab foundation that are not part of a braced wall panel shall be positively anchored with approved fasteners. There shall be not fewer than 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. A nut and washer shall be tightened on each anchor bolt. The bolts shall be located in the middle third of the width of the plate. Bolts shall extend not less than 7 inches (178 mm) into concrete or grouted cells of concrete masonry units. Wood sole plates at all exterior walls on monolithic slabs, wood sole plates of braced wall panels at building interiors on monolithic slabs and all wood sill plates shall be anchored to the foundation with minimum 1/ 2-inch- diameter (12.7 mm) anchor bolts spaced not greater than 6 feet (1829 mm) on center or approved anchors or anchor straps spaced as required to provide equivalent anchorage to 1/ 2-inch- diameter (12.7 mm) anchor bolts.
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