×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Contact US

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!

*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

Is there any way to get Cc and Cr values from Lab Data
3

Is there any way to get Cc and Cr values from Lab Data

Is there any way to get Cc and Cr values from Lab Data

(OP)
I am using old technique (plotting tangenet to consolidation curve) to calculate Cc and Cr values for Settlement calculation,

So I have Consolidation Results from Lab, is there any spread sheet or program available to calculate Cc and Cr Directly..I have uploaded my Console spread sheet below, please let me know, is there any direct way to find Cc and Cr
Thanks./.

RE: Is there any way to get Cc and Cr values from Lab Data

Well, you can write some programming to get Cc and Cr from spreadsheet. But tedius.
What's wrong with the old method. It gives you a good feel for the accuracy when you plot manually.

RE: Is there any way to get Cc and Cr values from Lab Data

(OP)
yeah correct.. but it is time consuming..  

RE: Is there any way to get Cc and Cr values from Lab Data

visual curve fitting, a pencil and a straighedge are all you need - and about 3 minutes (well reading glasses too, perhaps?)

Did it this week - no problems!

f-d

¡papá gordo ain't no madre flaca!

RE: Is there any way to get Cc and Cr values from Lab Data

Might I suggest you have the plot put in the form of loge-logp. This usually gives two straight lines and the intersection is putatively the preconsolidation pressure.  You should be able to determine the "intersection" point and determine the "straight-line" equations (i.e., Cc; Cr).  Don't have the time to try it myself at present.
  Casagrande did some consulting work for our company in Canada before I joined - my mentor was a student of his.  One of our engineers did a whole lot of e-logp constructions and kind of beamed with pride when showing Casagrande.  He looked at the curves and made a few adjustments - that didn't fit the "model" we all learned.  When asked, he intimated that he came up with the procedural construction so that he could "teach" his students.
  Question as to why are you still plotting e-log p anyway rather than strain-log p.  The latter gives Cc/(1+eo) directly.  and, you don't have to guess at the Gs value or do the test.

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

Low-Volume Rapid Injection Molding With 3D Printed Molds
Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Download Now
Design for Additive Manufacturing (DfAM)
Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a part’s function at the center of their design considerations. Download Now
Taking Control of Engineering Documents
This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. Download Now

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