Seismic Accelerations - IBC & ASCE

[HungryDinosaur_imported]

Hi All,

Can someone please advise what is the acceleration values used when designing steel structures using IBC or ASCE codes?

1. What values are commonly used?
2. What are the maximum/worst case values?

Thanks in advance.

Regards,

SubseaOcean

 

[DST148]

There is no such thing as commonly used values. The values are based on geographic location. Look for the seismic acceleration maps given in IBC / ASCE for your region/location.

 

[msquared48]

In answer to both questions, everything from sero to one.

Mike McCann
MMC Engineering

http://mmcengineering.tripod.com

 

[frv]

Look at the USGS website. They have a downloadable little program that can spit out the Ss and S1 values for locations based on zip or lat/long and what code you are using.

M^2.. I don't think 0 is a real possibility, as there is always some level of seismicity. Also, I've never seen it, but from a purely theoretical standpoint, I don't know why 1 would be an upper limit.

 

[PicoStruc]

M^2 is being sarcastic.

 

[HungryDinosaur_imported]

Hi All,

Appreciate everybody's comments. I went to the link, which gives a good table of accelrations.

http://en.wikipedia.org/wiki/Peak_ground_acceleration

The accelerations values range from 0.0017 to more than 1.24.

Regards,

SO

 

[PicoStruc]

Seriously, It is not a joke !

Get a structural engineer. You cannot do seismic design without any experience AND formation background.