2004 DECEMBER - Laserfiche WebLink

20.08.115 single-story steel-framed structures classified as groups B, F and S oc- cupancies or group H, division 4 or 5 occupancies. In groups B, F and S occupancies, the primary use shall be limited to storage, factories or work- shops. Minor accessory uses shall be allowed in accordance with the pro- visions of section 302. Structures on which this exception is used shall not have equipment at- tached to the structural frame or shall have such equipment detailed to ac- commodate the additional drift. Walls that are laterally supported by the steel frame shall be designed to accommodate the drift in accordance with section 1633.2.4. (Ord. 1869 § 2, 2002) 20.08.117 Section 1630.10.3 - Amended -Limitations: Section 1630.10.3 of the California Building Standards Code, 2001 edition (24 CCR), and including by reference the uniform building code, is amended to read as follows: 1630.10.3 Limitations. The design lateral forces used to determine the calculated drift may disregard the limitations of formula (30-6) and (30-7) and may be based on the peri- od determined from formula (30-10) neglecting the 30 or 40 percent limi- tations of section 1630.2.2, item 2. (Ord. 1869 § 2, 2002) 20.08.119 Section 1633.2.4 - Amended -Deformation Compatibility: Section 1633.2.4 of the California Building Standazds Code, 2001 edition (24 CCR), and including by reference the uniform building code, is amended to read as follows: 1633.2.4 Deformation compatibili- ty. All structural framing elements and their connections, not required by design to be part of the lateral- force-resisting system, shall be de- signed and/or detailed to be adequate to maintain support of design dead plus live loads when subjected to the expected deformations caused by seismic forces. PO effects on such elements shall be considered. Expect- ed deformations shall be determined as the greater of the maximum in- elastic response displacement, OM, considering PO effects determined in accordance with section 1630.9.2 or the deformation induced by a story drift of 0.0025 times the story height. When computing expected deforma- tions, the stiffening effect of those elements not part of the lateral-force- resisting system shall be neglected. For elements not part of the lateral- force-resisting system, the forces induced by the expected deformation may be considered as ultimate or factored forces. When computing the forces induced by expected deforma- tions, the restraining effect of adjoin- ing rigid structures and nonstructural elements shall be considered and a rational value of member and re- straint stiffness shall be used. Inelas- tic deformations of members and connections aze permitted to occur, provided the assumed calculated capacities are consistent with mem- ber and connection design and detail- mg. (Ord. 1869 § 2, 2002) 704-17 (Pleasanton December 2004)