×
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

Bearing Capacity Check

Bearing Capacity Check

Bearing Capacity Check

(OP)
Hi,
I`d like to know the if there are any guidelines about when to use low estimate, High Estimate or best estimate values of undrained soil shear strength for the bearing capacity calculations under the shallow foundation used as a pipeline support.
Note: the foundation will be on the seabed level.

RE: Bearing Capacity Check

Why would you not always use "best estimate"?

RE: Bearing Capacity Check

Yes, use the best estimate

The one exception would be in cases where you need to check the sensitivity of the structure -- then check the envelope of the low and high estimates.

----
The name is a long story -- just call me Lo.

RE: Bearing Capacity Check

My instructions sort of went like this. . . assuming all you have to go on is SPT N-values.

Let's say you have six borings that go to 30 ft. Let's say that the depth where the stress increase is greater than 10 percent existing overburden pressure is about 20 ft. I was taught to take the average N-value in the seat of settlement for each boring. I was then taught to characterize the stratum (strata), by the lowest average N-value obtained from the seat of settlement of each boring.

Now in highly layered soils and foundation loads that go to greater depths, that simplification may be in error. So, I'd have to reckon through that.

f-d

ípapß gordo ainÆt no madre flaca!

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


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