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


Stem Wall/Slab Detailing

Stem Wall/Slab Detailing

Stem Wall/Slab Detailing

Hi, I have a project where an elevated concrete slab for a new cmu electrical building is under construction. The slab is elevated a few feet above grade due to the flood level and is supported by a concrete stem wall with strip footings around the perimeter. Both the slab and the stem wall are 12" thick with double layers of reinforcement. Where the slab frames into the stem wall the horizontal rebar in the slab ends in 90-degree standard hooks and the vertical reinforcement in the stem wall also ends in 90-degree standard hooks. This is a detail I've seen typically however someone mentioned that the vertical reinforcement in the stem wall at the outside face should splice the top layer of reinforcement in the slab (negative reinforcement). Because I've never seen this I'm not sure if it's overkill. What do people typically do in this situation?

RE: Stem Wall/Slab Detailing

You always want to terminate your reinforcing on the far face/surface. Rebar is for tension, and, if you terminate reinforcing from the inside face to the nearest concrete surface over it, your 90deg corner can spall the concrete off.


RE: Stem Wall/Slab Detailing

I always splice the wall reinforcement into the slab to get continuity in the corner.

RE: Stem Wall/Slab Detailing


Quote (dik)

The rebar would be spliced on the opposite face. I've attached a pdf I threw together real quick to show what I'm talking about.

Quote (avscorreia)

I'm unsure of how that would help? I've always considered the joint between the slab/wall (shaded area in my sketch) as a fixed point so that as long as the rebar in the slab/wall is developed at the interface then I'm good. if the force is in the top mat is transferred to the spliced bar I don't see how it can 'turn the corner' into the stem wall rebar?

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


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