×
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

Soil properties for short-term stability through SLIDE

Soil properties for short-term stability through SLIDE

Soil properties for short-term stability through SLIDE

(OP)
Hi all,

I am assessing the short-term stability of a road embankment.

To model short-term stability behavior, i have used the Undrained Shear Strength for cohesive soils.

How would you model a non-cohesive layer in Slide software? Would i be correct in simply using the Mohr-Coulomb c':0 , phi : 30 deg?

Thanks for your help!

RE: Soil properties for short-term stability through SLIDE

You would be correct using a C=0 and Phi = an appropriate angle for free draining materials.

Mike Lambert

RE: Soil properties for short-term stability through SLIDE

If you have SPT data, you can use that data to get phi: there are several correlations between SPT N-value, normal stress and friction angle for granular soils.

RE: Soil properties for short-term stability through SLIDE

(OP)
Great, thanks Mike & Okiryu.

RE: Soil properties for short-term stability through SLIDE

Comments on undrained strength for clay:
Depending on whether it's a cut slope or fill slope, and whether it's NC, lightly OC or heavily OC, and the definition of short term (should be so short that less than 10% excess pore pressure is dissipated), using undrained strength for clay is not always safe.

For granular materials yes c'=0 and phi' are correct unless you are facing saturated fine sand in an earthquake event.

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