×
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

Timber piling axial capacity

Timber piling axial capacity

Timber piling axial capacity

(OP)
Question regarding axial capacity of altered driven timber piling. The 35-foot long, 10-inch diameter piling was driven 25 feet into a submerged sandy bottom. Realizing it was driven too deep, the contractor pulled the pile up 5 feet. Question: What is the effect on the axial capacity of the piling compared to if it had originally been driven 20 feet as specified?

RE: Timber piling axial capacity

What effect?  As you describe, it could be major.  At a minimum, you have lost all of your pile tip capacity.   In sandy soil, this is probably really bad news for you.  You should only retain your skin friction capacity which sands typicaly have little of.

You need to get new pile capacity curves from your geotech. I expect that your new curves will only include skin friction and no tip capcity.  In sandy soil, you may have virtually no capacity unless you are also driving through a good clay.

Good luck- I fear that you will need it.

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