Page Comparison

ICONSSymbols
S_DS = Short period design spectral acceleration coefficient [dimensionless]
S_D1 = Design spectral acceleration coefficient for 1.0 second period [dimensionless]
S_S = Short period map spectral acceleration coefficient [dimensionless]
S₁ = Map spectral acceleration coefficient for 1.0 second period [ dimensionless]
T = Natural vibration period [s]
T_A = Horizontal elastic design acceleration spectrum corner period [s]
T_B   = Horizontal elastic design acceleration spectrum corner period [s]
T_L = Transition period to the constant displacement region in the horizontal elastic design spectrum [s]
S_ae(T) = Horizontal elastic design spectral acceleration [g]
S_aR(T) = Reduced horizontal elastic design spectral acceleration [g]
R = Structural system response coefficient
R_a(T) = Earthquake load reduction coefficient
D  = Strength coefficient
I = Building importance factor

...