For further information on CFE Sismo, see the example below.
For seismic zone D and soil type I, the following parameters are found in Table 3.1.
a0 = 0.50
C = 0.50
Ta (s) = 0.0
Tb (s) = 0.6
r = ½
If T> Tb , then
a = c ( Tb / T)r = 0.50 * (0.6 / 1.15) ^ 0.5 = 0.3612
For a structure group of A – High Safety, the acceleration is multiplied by 1.5
a = 0.3612 * 1.5 = 0.5417
CAESAR II displays the calculated gravity factor on the Uniform Loads tab.
