×
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

Ground bearing pressure-retaining wall and reinforcement problem

Ground bearing pressure-retaining wall and reinforcement problem

Ground bearing pressure-retaining wall and reinforcement problem

(OP)
I have been asked to design a retaining wall. I need to check the ground bearing pressure.


The retainiing wall is shown in the pdf

C35 reinforced concrete is used. Surrchagre taken as 10kn/m2. DOT type 1 slag taken as 18kn/m3.

How do i calculate the maximum bearing presure? The allowable is 100kn/m

In addition how would i calculate the reinforcement required? I am guessing that i will be minimum reinforcement.
 

RE: Ground bearing pressure-retaining wall and reinforcement problem

The more common approach would be to design the wall for active push at a vertical plane at the inner tip of the footing of your L shaped wall. You would have the usual sliding and overturning checks with no less than 1.5 safety factors, and would consider in this the wall plus weight of infill and pavement over it (as a mass wall), plus any load above. Correct determination of the resultant of the active push compounded with the vertical always standing weights will give the reactions applied to the soil, and then its vertical and horizontal components can be derived.

RE: Ground bearing pressure-retaining wall and reinforcement problem

While this won't awnser your question directly it will give you an idea of how to go about the design of a RW.

http://www.cmaa.com.au/pdf/MA51_E1.pdf

When in doubt, just take the next small step.
 

RE: Ground bearing pressure-retaining wall and reinforcement problem

(OP)
cheers for the help

RE: Ground bearing pressure-retaining wall and reinforcement problem

(OP)
i have calculated the sliding and overturning factors. And it comes out at 1.63.

 

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