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shall be increased by reducing the spacing of fasteners along the perimeter of each piece of <br />sheathing to 4 inches (102 mm) o.c. <br />TABLE 2308.12.4 <br />WALL BRACING IN SEISMIC DESIGN CATEGORIES D AND E <br />(Minimum Length of Wall Bracing per each 25 Linear Feet of Braced Wall Linea) <br />CONDITION SHEATHbNG Sus < 0.50 0.50 < Sps < 0.75 0.75 <_ Sps <I.00 Sps > 1.00 <br /> TYPE <br /> 5 feet 8 feet 9 feet I2 feet <br />One Story S-W 4 inches 0 inches 4 inches 0 inches <br />For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm. <br />a. Minimum length of panel bracing of one face of the wall for S-W sheathing; h/w ratio <br />shall not exceed 2:1. For S-W panel bracing of the same material on two faces of the wall, the <br />minimum length is permitted to be one-half the tabulated value but the h/w ratio shall not <br />exceed 2: I and design for uplift is required. <br />b. S-W =wood structural panels and diagonal wood sheathing. <br />c. Nailing as specified below shall occur at all panel edges at studs, at top and bottom plates <br />and, where occurring, at blocking. <br />Section ?-5-195: SUSTANTIAL STRUCTURAL DAMAGE Section 3402.] of the Code <br />is amended as follows: <br />For the purposes of this chapter, the following definition applies and is hereby added to <br />Section 220-S of the San Leandro Building Code: <br />Substantial Structural Damage. A condition where: <br />1. In any story, the vertical elements of the lateral-force-resisting system, <br />have suffered damage such that the lateral load-carrying capacity of the <br />structure in any direction has been reduced by more than 20 percent from its <br />pre-damaged condition, or <br />2. The capacity of any vertical gravity load-carrying component, or any group <br />of such components, that supports more than 30 percent of the total area of the <br />structure's floor(s) and roof(s) has been reduced more than 20 percent from its <br />pre-damaged condition, and the remaining capacity of such affected elements <br />with respect to all dead and live loads is less than 75 percent of that required <br />by the building code for new buildings of similar structure, purpose, and <br />location. <br />Damage may be caused by events ar a combination of events, including, but <br />not limited to, fire, explosion, structural pest orwood-destroying organism <br />attack, earthquake, wind storm, vehicular impact, ground subsidence or <br />4 <br />