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2.2. Seismic evaluation and design of the wall anchorage system in reinforced <br />concrete and reinforced masonry wall buildings with flexible diaphragms in <br />Occupancy Category I or II are permitted to be based on the procedures <br />specified in Appendix Chapter A2. <br />2.3. Seismic evaluation and design of cripple walls and sill plate anchorage in <br />residential buildings of light-frame wood construction in Occupancy Category I <br />or II are permitted to be based on the procedures specified in Appendix <br />Chapter A3. <br />2.4. Seismic evaluation and design of soft, weak, or open-front wall conditions in <br />multiunit residential buildings of wood construction in Occupancy Category I or <br />II are permitted to be based on the procedures specified in Appendix Chapter <br />A4. <br /> 2.5. Seismic evaluation and design of concrete buildings in all Occupancy <br />Categories are permitted to be based on the procedures specified in Appendix <br />Chapter A5. <br />3. Compliance with ASCE 31 based on the applicable performance level as shown in <br />Table 3405.2.4.2. It shall be permitted to use the BSE-1 earthquake hazard level <br />as defined in ASCE 41 and subject to the limitations in item 4 below. <br />4. Compliance with ASCE 41 using the BSE-1 Earthquake Hazard Level defined in <br />ASCE 41 and the performance level as shown in Table 3405.2.4.2. The design <br />spectral response acceleration parameters Sxs and Sx1 specified in ASCE 41shall <br />not be taken less than 75 percent of the respective design spectral response <br />acceleration parameters SDS and SD1 defined by the California Building Code and <br />its reference standards. <br /> <br />TABLE 3405.2.4.2 <br />PERFORMANCE CRITERIA FOR REDUCED CBC <br />LEVEL SEISMIC FORCES <br /> <br />OCCUPANCY <br />CATEGORY <br />(BASED ON CBC <br />TABLE 1604.5) <br />PERFORMANCE <br />LEVEL <br />FOR USE WITH ASCE <br />31 <br />PERFORMANCE LEVEL <br />FOR USE WITH ASCE 41 <br />BSE-1 EARTHQUAKE <br />HAZARD LEVEL <br />I Life Safety (LS) Life Safety (LS) <br />II Life Safety (LS) Life Safety (LS) <br />III Note a, Note b Note a <br />IV Immediate Occupancy <br />(IO) <br />Immediate Occupancy (IO) <br />a. Acceptance criteria for Occupancy Category III shall be taken as 80 percent <br />of the acceptance criteria specified for Occupancy Category II performance <br />levels, but need not be less than the acceptance criteria specified for <br />Occupancy Category IV performance levels. <br />b. For Occupancy Category III, the ASCE screening phase checklists shall be <br />based on the life safety performance level. <br /> <br />3405.2.4.3 Referenced Standards