4. Nomenclature
A215 Average spectral intensity from 0.2T to 1.5T
DBE Design Base Earthquake
dt Delta t, i.e. the time step
ET Endurance Time
ETA Endurance Time Analysis
ETEF Endurance Time Excitation Function
ETM Endurance Time Method
g Gravitational acceleration (=9.81 m/s^2)
GM Ground Motion
MCE Maximum Considered Earthquake
NPTS Number of points
PGA Peak Ground Acceleration
PR Return period (years)
Sa Spectral acceleration
t Time
T Fundamental period of vibration
T0 Fundamental period of vibration (mode 1)
s Second