Member Login

Remember Me
Forgot Password?
Join Us!

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!

Join Eng-Tips
*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.

Link To This Forum!

Partner Button
Add Stickiness To Your Site By Linking To This Professionally Managed Technical Forum.
Just copy and paste the
code below into your site.

SAFE12-Modeling slab on expansive soil (uplift) with springs (k) HowTo

SAFE12-Modeling slab on expansive soil (uplift) with springs (k) HowTo


I'm using SAFE 12, and I have a hard time trying to model a slab on expansive soil. I have an uplift linear load only on the perimeter beam of the slab. The super imposed dead weight is not enough to counter the uplift pressure. I have defined a spring value (compression only) and my load combination 0.9D+1.6L (uplift) has been defined as NON LINEAR.

But when I run my model, I'm expecting to see the edges of the slab to be uplifted and to have some significant moment forces on the perimeter. But I have nothing (0.00012 kip*ft)

Anyone has experience with such problem ? how to you model it ?

any help would be appreciated


RE: SAFE12-Modeling slab on expansive soil (uplift) with springs (k) HowTo


If I got you right, you have an uplift force at the edge and since the arm of force is zero so the moment value will be zero. But if you have the moment load at the edge of the slab caused by the effect of basement wall this will cause uplift situation and the value of moment is equal to moment load added.

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!

Share a File


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