×
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!

*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

PY Curves?

PY Curves?

PY Curves?

(OP)
Can somebody give some light in what the PY curve term is?  I suppose it refers to Load-Settlement Curve but I'm not sure.  Any reference would be appreciated.

RE: PY Curves?

PY-curves generally refer to the lateral load (P) and resulting deflection (Y) for a certain soil-pile system.  

RE: PY Curves?

p-y Curves are developed using  P = Modulas of Subgrade Reaction x the pile width and y = deflection along the pile length.  The method is utilized in some software and oftentimes tends to give a false sense of precision. This problem comes about due to crude estimations of the soil Modulas of Subgrade Reaction, usually derived from vague tables and/or the soil strata are so generalized that a simple chart would give reasonable results.  In theory, given good information, the method ought to give a very good picture of the actual pile capacity and the pile deflection.  My call is for insisting on good information (soil stratification and modulas for each major strata) to begin with.

RE: PY Curves?

PY curves are for the lateral deflection of piles.

For the vertical movement of piles use t-z curves.

See article:

Leland M. Kraft, Jr.; Takaaki Kagawa; Ricard P. Ray
Geotechnical Division of Proceedings of the American Society of Civil Engineers, GT Nov, 1981, pp 1543-1561

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! Already a Member? Login


Resources

Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now
The Great Project Profitability Debate
A/E firms have a great opportunity to lead the world into the future, but the industry’s greatest asset—real-time data—is sitting wasted in clunky, archaic ERP platforms. Learn how real-time, fully interactive dashboards in a modern ERP allow you to unlock data that will shape the future of the world. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close