Determine the Response Spectrum
Determine the Response Spectrum
(OP)
Hi, I understand that the construction of the response spectrum is based on Section 11.4.5 of ASCE 7-10 and based on the MCEr.
My question is: can I construct a response spectrum using the same considerations from Section 11.4.5 of ASCE 7-10 but using a different ground motion to the MCEr?
For example, the MCEr is the ground motion having a 2% probability of exceedance for 50 years (2,475-year return period).
But I want to construct a response spectrum using a ground motion with 10% probability of exceedance for 50 years. Can I use the parameters of this ground motion and the guidelines outlines in Section 11.4.5 of ASCE 7-20 to construct a response spectrum?
My question is: can I construct a response spectrum using the same considerations from Section 11.4.5 of ASCE 7-10 but using a different ground motion to the MCEr?
For example, the MCEr is the ground motion having a 2% probability of exceedance for 50 years (2,475-year return period).
But I want to construct a response spectrum using a ground motion with 10% probability of exceedance for 50 years. Can I use the parameters of this ground motion and the guidelines outlines in Section 11.4.5 of ASCE 7-20 to construct a response spectrum?





RE: Determine the Response Spectrum
Also, You might want to try the USGS Tool with ASCE 41 and BSE-1E (20% in 50 yrs) or BSE-2E (5% in 50 yrs) Hazard Levels to see these response spectrums. The advanced report has information on how the response spectrum is derived. https://earthquake.usgs.gov/hazards/designmaps/usd...
RE: Determine the Response Spectrum
I was looking at ASCE 41-13 and found a general equation for constructing the response spectrum. See attached. Sorry, I did not mention that I have the Ss and S1 parameters for my hazard (10% probability of exceedance for 50 years). So, I think that since I have the correct Ss and S1 parameters, I will be able to use the ASCE 41-13 equations.
Looks like the guidelines from ASCE 7-10 applies only for the MCEr hazard. But, I found that the response spectrum based on the MCEr (2% in 50 years) is almost the same to the response spectrum for 10% probability of exceedance for 50 years for some regions in the US (western US).