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


Unconfined Compressive Strength of Rock

Unconfined Compressive Strength of Rock

Unconfined Compressive Strength of Rock

how to determine C and θ of rock by UCS by Formula or stress strain curve.

RE: Unconfined Compressive Strength of Rock

Hi Usmi
I have read a paper written by Hoek & Bray regarding your query, but I could not recover the title.
My understanding there is a curve for each rock, then the c & θ is depending on its overburden pressure.

RE: Unconfined Compressive Strength of Rock

Thank you for your reply to this thread.
I have came to know to determine C = 0.145*Cu ( cu is UCS value ) but i was unable to get the right reference. and for θ as well.

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!


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