×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Peak Ground Acceleration for Liquefaction Potential

Peak Ground Acceleration for Liquefaction Potential

Peak Ground Acceleration for Liquefaction Potential

(OP)
HI:

I am doing a preliminary liquefaction potential analysis. I am using the methods outlined in SP117 (from the California...). Since I the project is located in an area with a low seismicity (upstate NY), and since I believe the data available to calculate the peak ground accelation (PGA)using predictive relationships are not reliable, I am trying to use the PGA values obtained at the USGS web site by zip code (i.e. I can obtain a PGA value with a PE of execeedence of 10% in 50 years). However, this value refers to Site Class B (rock site). Does somebody knows how I can relate this value to a class different than B (i.e. E)? Also, according to the IBC 2000 code, for a class site F, a specific site evaluation should be done. I belive the code is very vague. Does somebody refer to where I can find more info about this specific site evaluation. I have read Earthquake Engineering, by Dr. Kramer from the U of W., and I believe I know what to do. However, I would like more input. Thank

RE: Peak Ground Acceleration for Liquefaction Potential

Arcangelo,
Few years back I did liqefaction analysis of potential liquefiable fine sandy soil. That time I used a technical paper by Seed & Idris. I don't remember the title. The paper had some graphs using the gradation properties of soil along with the ratio of shear strength of soil and ground acceleration for different earth quake zones.I can't recall anything more. You can search for that paper and hope it may be useful. Regards, Pnmkapoor  

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources