×
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

Slab Resistance
2

Slab Resistance

Slab Resistance

(OP)
In designing a shallow foundation with the floor at the bottom of the wall and the soil on the exterior at the top of the wall (building is open with no interior walls to add rigidity).  How can I quantify the amount of resistance the floor slab will have to resist overturning?  Currently my overturning moments grossly outweigh my resisting moments and I need to rectify the situation before I can continue. Thanks much!

RE: Slab Resistance

If continuous with the wall, the slab provides stability. Determine the moment and shear requirements for the slab from its connection to the wall under the earth push ar the proper overturning required factor, 1.6, 2 or whatever, and if the slab is properly reinforced to take the standing solicitations, and you don`t see anything wrong anywhere in the model, you are safe enough against overturning. Like modeling a vase of a pool.

RE: Slab Resistance

The slab will have the most impact in resisting sliding, but very little against overturning unless the slab is cast integral with the footing of the wall itself, and properly reinforced to take the moment from the wall.

Picking up additional dead weight by increasing the length of the heel could help if it is possible.  If not, then you are probably dealing with an inefficient "L" shaped retaining wall, the design of which is very limited by the allowable soil stress.

Mike McCann
MMC Engineering
Motto:  KISS
Motivation:  Don't ask

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