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9 <br /> <br />in Occupancy Category I or II are permitted to be based on the <br />procedures specified in Appendix Chapter A3. <br />2.4. Seismic evaluation and design of soft, weak, or open-front wall <br />conditions in multiunit residential buildings of wood construction in <br />Occupancy Category I or II are permitted to be based on the <br />procedures specified in Appendix Chapter A4. <br /> 2.5. Seismic evaluation and design of concrete buildings in all <br />Occupancy Categories are permitted to be based on the procedures <br />specified in Appendix Chapter A5. <br />3. Compliance with ASCE 31 based on the applicable performance level as <br />shown in Table 3405.2.4.2. It shall be permitted to use the BSE-1 <br />earthquake hazard level as defined in ASCE 41 and subject to the <br />limitations in item 4 below. <br />4. Compliance with ASCE 41 using the BSE-1 Earthquake Hazard Level <br />defined in ASCE 41 and the performance level as shown in Table <br />3405.2.4.2. The design spectral response acceleration parameters S xs and <br />S x1 specified in ASCE 41shall not be taken less than 75 percent of the <br />respective design spectral response acceleration parameters S DS and S D1 <br />defined by the California Building Code and 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 TABLE <br />1604.5) <br />PERFORMANCE <br />LEVEL <br />FOR USE WITH ASCE <br />31 <br />PERFORMANCE LEVEL <br />FOR USE WITH ASCE <br />41 BSE-1 <br />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 (IO) Immediate Occupancy (IO) <br />a. Acceptance criteria for Occupancy Category III shall be taken as 80 percent of <br />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 />