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  • Using the coefficients obtained from the map, the spectrum curve given in Codes is automatically determined by the programme.

Info

Due to the need for site-specific analysis for site class F, the design spectrum isn’t determined automatically. The reduced design spectrum needs to be imported as a .txt file.

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İnternational Design Codes

ASCE 7-16 : 11.4.6 Horizontal Elastic Design Spectrum

TSC 2018 : Horizontal Design Spectrum Reduced by Respose Modification (4.4.1)Response Spectrum

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SYMBOLS

Fa = Short-Period Site Coefficient
Fv = Long-Period Site Coefficient for a period of 1.0 seconds
SMS = Short-period design spectral response acceleration parameter [dimensionless]
SM1 = Design spectral response acceleration parameter for a period of 1.0 seconds [dimensionless]
SS = the mapped MCER spectral response acceleration parameter at short periods
S1 = the mapped MCER spectral response acceleration parameter at a period of 1 seconds
SD1 = Design spectral response acceleration parameter for a period of 1.0 seconds
SDS = Design earthquake spectral response acceleration parameters at short periods
T = Natural vibration period [s]
T0 =Horizontal elastic design acceleration spectrum corner period [s]
TS   = Horizontal elastic design acceleration spectrum corner period [s]
TL = Transition period to constant displacement region in horizontal elastic design spectrum [s]
Sa = Horizontal elastic design spectral acceleration [ g]

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