Tek-Tips is the largest IT community on the Internet today!
Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!
-
Congratulations cowski on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!
Can you find the site class from the PGA or the Mapped Acceleration Parameters?
- Thread starter CDG31
- Start date
driftLimiter
Structural
ASCE 7 - 16 has Ss and S1 contours for the US. You can look up the values from multiple locations on the web including: [URL unfurl="true"]https://seismicmaps.org/[/url]
However the Seismic Site class must be determined from the soil parameters or assumed, it cannot be looked up.
However the Seismic Site class must be determined from the soil parameters or assumed, it cannot be looked up.
- Thread starter
- #3
I got asked a question recently that just threw me off. The question was three lines long,
PGA = 0.3
S1 = 0.9 (I think S1 was 0.9, but I don't recall exactly what the value was)
Find PGAm?
I know PGAm can be found using section 11.8.3 from ASCE 7-16 but the factor Fpga, is based on the site class not S1. Thus, I got confused on how to find PGAm. I am not sure if you have any comments that could help me solve this question.
PGA = 0.3
S1 = 0.9 (I think S1 was 0.9, but I don't recall exactly what the value was)
Find PGAm?
I know PGAm can be found using section 11.8.3 from ASCE 7-16 but the factor Fpga, is based on the site class not S1. Thus, I got confused on how to find PGAm. I am not sure if you have any comments that could help me solve this question.
- Status
Similar threads
- Locked
- Question
