ORD 1869 - Laserfiche WebLink

supporting such discontinuous systems shall have the design strength to resist the combination loads resulting from the special seismic load combinations of Section 1612.4. The Connections of such discontinued elements to the supporting members shall be adequate to transmit the forces for which the discontinuous elements were required to be designed. EXCEPTIONS: 1. The quantity Em in Section 1612.4 need not exceed the maximum force that can be transferred to the element by the lateral-force-resisting system. 2. Concrete slabs supporting light-frame wood shear wall systems or light-frame steel and wood structural panel shear wall systems. For Allowable Stress Design, the design strength may be determined using an allowable stress increase of 1.7 and a resistance factor, ~, of 1.0. This increase shall not be combined with the one-third stress increase permitted by Section 1612.3, but may be combined with the duration of load increase permitted in Chapter 23, Division III. Section 20.08.115 Section 1630.10.2 - amended - Calculated Section 1630.10.2 of the Califomia Building Standards Code 2001 Edition (24 C.C.R.), and including by reference the Uniform Building Code, is amended to read as follows: 1630.10.2 Calculated. Calculated story drift using AM shall not exceed 0.025 times the story height for structures having a fundamental period of less than 0.5 second. For structures having a fundamental period of 0.5 second or greater, the calculated story drift shall not exceed 0.020/T ~/3 times the story height. EXCEPTIONS: 1. These drift limits may be exceeded when it is demonstrated that greater drift can be tolerated by both structural elements and nonstructural elements that could affect life safety. The drift used in this assessment shall be based upon the Maximum Inelastic Response Displacement, DM. 2. There shall be no drift limit in single-story steel-framed structures classified as Groups B, F and S Occupancies or Group H, Division 4 or 5 Occupancies. In Groups B, F and 43