×
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

Related Articles

Jobs

Concrete Pier Integral with Concrete Wall

Concrete Pier Integral with Concrete Wall

Concrete Pier Integral with Concrete Wall

(OP)
See the attached sketch.

I've got a wall that is very thick (20" thick) as it retains soil as a cantilevered retaining wall. The wall also supports steel columns. When the wall supports steel columns, I have "bump outs" to make room to support the column baseplates, anchorbolts, etc.

That said, I don't need the column horizontal closed ties to extend all the way across the wall thickness....but...I was wondering if you guys add lateral ties (per my sketch) to link the tensile face wall reinforcing on the back side with the vertical and cage reinforcing of the monolithic cast pier?

Something about the pier cage extending 1/2 way thru the wall thickness keeps making me look at it. But then again, the vertical column reinforcing is well within the thickness of the wall and seems to be fine as detailed.

What do you guys think? Is there any reason to link these vertical bars....or is that idea just a waste of time, money, and material?

RE: Concrete Pier Integral with Concrete Wall

I would extend the stirrups to the inside face, and use the wall vertical steel as the vertical bars and add what you need. Is the ties inside the stirrups the reason for the 8.5" dimension?

RE: Concrete Pier Integral with Concrete Wall

Jrisebo, I wondered the same thing about the location of the pier until I looked at the section view below.


Marinaman, if there was a horizontal thrust from the column pushing in the same direction as the retained soil and the retaining wall was used to resolve that thrust then I could imagine a need to tie those bars together in some manner. Otherwise I do not.

RE: Concrete Pier Integral with Concrete Wall

I don't see a need for the ties.

I like to debate structural engineering theory -- a lot. If I challenge you on something, know that I'm doing so because I respect your opinion enough to either change it or adopt it.

RE: Concrete Pier Integral with Concrete Wall

(OP)
I appreciate the replies.

The column only has vertical force, no thrust or lateral force is imposed onto the wall by the steel column.

RE: Concrete Pier Integral with Concrete Wall

From a constructability point of view it would be better if the verts were tied to the main wall verts. I see the notch for the beam, but it would be easier to detail a few different bars than leave the rod buster trying to figure out how to hold all of the rebar up. This is a big section, and that rebar cage will be heavy if the wall is as tall as I think.

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


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