Good day,
I'm new to STAAD.Pro and I've been practicing the most basic commands, but when I tried to add seismic definitions, I realize there are not seismic parameters from my country (Peru-E030). I would like to add new custom parameters, but I can't see a "Custom" option available.
What alternatives do I have in this case?
I'm giving some information about the Peruvian Seismic Code (just in case):
Peruvian Seismic Code has 7 components:
Sa: Maximum Design Acceleration = ZUCS/R * g
Z: Seismic Zone factor. Values: 0.45 (Z4), 0.35 (Z3), 0.25 (Z2) and 0.10 (Z1)
U: Category and Use factor. Values: 1.5 (A), 1.3 (B) and 1.0 (C)
S: Geotechnic conditions. Categories: S0, S1, S2, S3. Values depend on Seismic Zone, each Seismic Zone, and Geotechnics Category means one value of S.
Additionally, each Geotehcnic categories have a unique value of Tp and TL, which are going to be useful for the next component.
C: Seismic Amplification factor. This parameter defines the Spectrum graph, by considering the Fundamental Period (T)
If T<Tp: C = 2.5, If Tp<T<TL: C = 2.5(Tp/T), Else C = 2.5(Tp*TL/T)
R: Basic Reduction factor. Values are defined by user, it depends of several evaluations.
g: Gravity
As you see, most of the factors depend on each category, except "C".