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3. Masonry elements designed primarily as axial-load carrying members shall <br /> comply with Sections 2106.1.12.4, Item 1 and 2108.2.6.2.6. <br /> <br /> 4. Masonry elements designed primarily as flexural members shall comply with <br /> Section 2108.2.6.2.5. <br /> <br /> 5. (Not Adopted) <br /> <br /> 6. Steel elements designed primarily as flexural members or trusses shall have <br /> bracing for both top and bottom beam flanges or chords at the location of the <br /> support of the discontinuous system and shall comply with the requirements of <br /> AISC - Seismic Part I, Section 9.4b. <br /> <br /> Sec. 9.69 SECTION 1630.10.2 OF THE BUILDING CODE AMENDED: Section <br />1630.10.2 of the Building Code is hereby amended to read as follows: <br /> <br /> Section 1630.10.2 Calculated. Calculated story drift using AM shall not exceed <br /> 0.025 times the story height for structures having a fundamental period of less <br /> then 0.5 second. For structures having a fundamental period of 0.5 second or <br /> greater, the calculated story drift shall not exceed 0.020/T 1/3 times the story <br /> height. <br /> <br /> Sec. 9.70 SECTION 1633.2.4 OF THE BUILDING CODE AMENDED: Section <br />1633.2.4 of the Building Code is hereby amended to read as follows: <br /> <br /> Section 1633.2.4 Deformation compatibility. All structural framing elements and <br /> their connections, not required by design to be part of the lateral-force-resisting <br /> systems, shall be designed and/or detailed to be adequate to maintain support of <br /> design dead load plus live loads when subjected to the expected deformations <br /> caused by seismic forces. PA effects on such elements shall be considered. <br /> Expected deformations shall be determined as the greater of the Maximum <br /> Inelastic Response Displacement, AM, considering PA effects determined in <br /> accordance with Section 1630.9.2 or the deformation induced by a story drift of <br /> 0.0025 times the story height. When computing expected deformations, the <br /> stiffening effect of those elements not part of the lateral-fome-resisting system <br /> shall be neglected. <br /> <br /> For elements not part of the lateral-force-resisting system, the forces induced by <br /> the expected deformations may be considered as ultimate or factored forces. <br /> When computing the forces induced by expected deformations, the restraining <br /> effect of adjoining rigid structures and nonstructural elements shall be considered <br /> and a rational value of member and restraint stiffness shall be used. Inelastic <br /> deformations of members and connections are permitted to occur, provided the <br /> assumed calculated capacities are consistent with member and connection <br /> design and detailing. <br /> <br />Atty/Ord/Ord.167 <br />102402 10 <br /> <br /> 2241 <br /> <br /> <br />