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// CODE SNIPPET

1615.2.5 Design Spectral Response Coefficients

NYC Building Code 2008 > 16 Structural Design > 1615 Earthquake Loads — Site Ground Motion > 1615.2 Site-Specific Procedure for Determining Ground Motion Accelerations > 1615.2.5 Design Spectral Response Coefficients
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Where the site-specific procedure is used to determine the design ground motion in accordance with Section 16 15.2.4, the parameter SDS shall be taken as the spectral acceleration, Sa, obtained from the site-specific spectra at a period of 0.2 second, except that it shall not be taken as less than 90 percent of the peak spectral acceleration, Sa, at any period. The parameterSDI shall be taken as the greater of the spectral acceleration, Sa, at a period of 1 second or two times the spectral acceleration,Sa, at a period of 2 seconds. The parameters SMSandSMI shall be taken as 1.5 times SDSand SDI, respectively. The values so obtained shall not be taken as less than 80 percent of the values obtained from the general procedures of Section 1615.1.

Related Code Sections


1615.2.5 Structural Design, Design Spectral Response Coefficients
Where the site-specific procedure is used to determine the design ground motion in accordance with Section 16 15.2.4, the parameter ...
NYC Building Code 2008 > 16 Structural Design > 1615 Earthquake Loads — Site Ground Motion > 1615.2 Site-Specific Procedure for Determining Ground Motion Accelerations > 1615.2.5 Design Spectral Response Coefficients
1620.2.7 Structural Design, Bearing Walls and Shear Walls
importance factor (Table 1604.5). S DS = The short-period site design spectral response acceleration coefficient (Section ...
NYC Building Code 2008 > 16 Structural Design > 1620 Earthquake Loads — Design, Detailing Requirements and Structural Component Load Effects > 1620.2 Structural Component Design and Detailing (For Use in the Simplified Analysis Procedure of Section 1617.5) > 1620.2.7 Bearing Walls and Shear Walls
1603.1.5 Structural Design, Earthquake Design Data
and S 1 . Site class. Spectral response coefficients, S DS and S D1 . Seismic design category. Basic seismic-force-resisting system(s ...
NYC Building Code 2008 > 16 Structural Design > 1603 Construction Documents > 1603.1 General > 1603.1.5 Earthquake Design Data
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Site class. Spectral response coefficients, S DS and S D1 . Seismic design category. Basic seismic-force-resisting system(s). Design ...
NYC Building Code 2014 > 16 Structural Design > 1603 Construction Documents > 1603.1 General > 1603.1.6 Earthquake Design Data
1616.3 Structural Design, Determination of Seismic Design Category
All structures shall be assigned to a seismic design category based on their seismic use group and the design spectral response ...
NYC Building Code 2008 > 16 Structural Design > 1616 Earthquake Loads — Criteria Selection > 1616.3 Determination of Seismic Design Category
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