×
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

Reasonable CPT values

Reasonable CPT values

Reasonable CPT values

(OP)
What will be reasonable CPT values for sandy clay? Tip resistance and Sleeve friction?

RE: Reasonable CPT values

I will check my archives and get back to you shortly regarding possible tip and sleeve values for sandy clay.

A better approach for examining the CPT data with respect to soil type might be to look at the dissipation plots.  If the dissipations are relatively quick then you could assume that the soil contains more/some/lots of sand. (Sand is more permeable than clay, thus a faster dissipation) If the dissipations take quite long to reach equilibrium or the 50% dissipation mark then the sand content is most likely small and the soil is mostly clay or fine grained in nature.  Hopefully a quick dissipation was performed at each rod connection.??

Most often in a saturated soils.....
A distinctive rise in the dynamic pore pressures would indicate the soil is clayey in nature, while a lower pore pressure response would indicate silt or possibly sandy type soils.

Coneboy

RE: Reasonable CPT values

(OP)
Thanks for the tips Coneboy. Let me know when you have the typical values of tip resistance and sleeve friction in sandy material.

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