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// CODE SNIPPET

1617.6.2.4.3 Special Moment Frames

NYC Building Code 2008 > 16 Structural Design > 1617 Earthquake Loads — Minimum Designlateral Force and Related Effects > 1617.6 Seismic-Force-Resisting Systems > 1617.6.2 Seismic-Force-Resisting Systems (For Use in the Simplified Analysis Procedure of Section 1617.5) > 1617.6.2.4 System Limitations for Seismic Design Category D > 1617.6.2.4.3 Special Moment Frames

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A special moment frame that is used but not required by Table 1617.6.2 is permitted to be discontinued and supported by a stiffer system with a lower response modification coefficient, R, provided the requirements of Sections 1620.2.3 and 1620.4.1 are met. Where a special moment frame is required by Table 16 17.6.2, the frame shall be continuous to the foundation.

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