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1613.4 Alternatives to ASCE 7
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The provisions of Section 1613.4 shall be permitted as alternatives to the relevant provisions of ASCE 7.
1613.4.1 Additional Seismic Force-Resisting Systems for Seismically Isolated Structures
Add the following exception to the end of Section 220.127.116.11 of ASCE 7:
Exception: For isolated structures designed in accordance with this standard, the structural system limitations including structural height limits, in Table 12.2-1 for ordinary steel concentrically braced frames (OCBFs) as defined in Chapter 11 and ordinary moment frames (OMFs) as defined in Chapter 11 are permitted to be taken as 160 feet (48 768 mm) for structures assigned to Seismic Design Category D, E or F, provided that the following conditions are satisfied:
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