×
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

Screw pile foundation - minimum embedment depth requirement?

Screw pile foundation - minimum embedment depth requirement?

Screw pile foundation - minimum embedment depth requirement?

(OP)
Hi,

I don't think there is specific emebedment minimum depth requirement for screw pile to work other than frost depth and uplift capacity requirement. But I am not 100%.

I got a project, minimum torque specified was 80,000 ftlb and depth of installation was around 24 feet. But contractor was saying they got 100,000 ftlb and was not able to go further than 12 feet because of rock. I did not get chance to look for there reading data sheet yet. soil was mainly stiff to very stiff clay.

will the installation be fine to take design loads using torque and capacity relation? people may argue why not. Do we need to satisfy design depth and minimum torque both?

Will appreciate for your insight on this.

Thanks.

RE: Screw pile foundation - minimum embedment depth requirement?

I think the contractor is correct, and if he has hit rock, not just a perched boulder or the like, then your specification would be satisfied.

RE: Screw pile foundation - minimum embedment depth requirement?

Rock is good... did you have a geotech report. 12' is normally well below frost penetration for most areas of Canada.

Dik

RE: Screw pile foundation - minimum embedment depth requirement?

(OP)
I was thinking this depth of 3.5 m is not too deep to consider it as deep foundation.

RE: Screw pile foundation - minimum embedment depth requirement?

Agree with the above comments. But I think that if the rock where they found at 12' is not the bedrock of the site, you may need to try to go deeper doing some preboring. So, take a look at the boring data and make sure that actually you can expect the bedrock at shallow depths.

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


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