| Tipnote |
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By using the coefficients obtained from the map by the program, the spectrum curve given in Figure 211.4-1 with Equation 211.2 4-3 - 211.4-3 is automatically obtained. |
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SYMBOLS
F S = Local ground impact coefficient for the short-period region
F 1 = Local ground impact coefficient a = Short-Period Site Coefficient
Fv = Long-Period Site Coefficient for a period of 1.0 seconds
S DS MS = Short-period design spectral response acceleration coefficient parameter [dimensionless]
S D1 M1 = Design spectral response acceleration coefficient parameter for a period of 1.0 seconds [dimensionless]
SS = Short period map spectral acceleration coefficient [dimensionless]
S 1 = Map spectral acceleration coefficient the mapped MCER spectral response acceleration parameter at short periods as determined in accordance with Section 11.4.2,
S1 = the mapped MCER spectral response acceleration parameter at a period of 1 s as determined in accordance with Section 11.4.2
SD1 = Design spectral response acceleration parameter for a period of 1.0 seconds [dimensionless]
SDS = Design earthquake spectral response acceleration parameters at short periods
T = Natural vibration period [s]
T A 0 =Horizontal elastic design acceleration spectrum corner period [s]
T B S = Horizontal elastic design acceleration spectrum corner period [s]
TL = Transition period to constant displacement region in horizontal elastic design spectrum [s]
S ae (T) a = Horizontal elastic design spectral acceleration [ g]
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