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".
The equivalent static seismic load generations are specific to certain building codes and the generations are based on the equations provided in the code. There is no option to define a custom code in there.
What you can do is directly enter the Period vs. acceleration data as a custom response spectrum loading as shown next. From within Load Case Details you would choose the seismic load case and then click on the Add button to add the response spectrum input
Answer Verified By: Rodrigo Iturraran Zapata
Thank you Sye.
One more question, do you have any references for the components of that window? (damping, signed response spectrum result options, etc), I would like to know the utility or meaning of each component.
Please refer to the Help Documentation to find the detailed explanation of these terms. Once you launch help, search by the term Response Spectrum and you will get a long list of topics related to Response Spectrum as per different codes. Pick any one like the IBC 2018 for example and you will find the details in there