×
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

Metal Stud Pony Wall

Metal Stud Pony Wall

Metal Stud Pony Wall

(OP)
I am designing the connection at the base of a metal stud pony wall. It is along stairs, 4' tall, 3.625" thick and i'm applying a 200# load horizontally to the top of the wall per UBC 97.

Problem: I am getting very large uplift forces on the SMS screws at the base and on the shot pins which anchor the bottom track to the concrete slab.

Question: Does anyone have a beefier connection detail for the base of the wall to teh slab? or different way of analyzing the metal stud pony wall system to get smaller uplift forces?

Thanks!

RE: Metal Stud Pony Wall

Increase the thickness of the wall to 6" or 8" with studs on alternate sides @ 24" spacing and full width base and top.  Attach base to floor with Hilti adhesive anchors.

RE: Metal Stud Pony Wall

Unless you can make the top plate span from a return wall segment at each end, I would install intermittent vertical 3" rolled channels or angles field welded to cast in plate in slab or set into cored holes drilled thru existing slab and into backfill and filled with concrete. Infill between rolled members with metal studs.

RE: Metal Stud Pony Wall

Does the wall have to sit on top of the stairs, or could it go along the side of the stairs to the floor below?

Mike McCann
McCann Engineering

RE: Metal Stud Pony Wall

StiffClip CL is what I use.  Or a 3" X 3" steel angle, welded to each stud, and fastened to the slab with an expansion bolt.

DaveAtkins

RE: Metal Stud Pony Wall

Note that you can get up to 0.02 radians of rotation with the stiff clip.  This may fail you in deflection.

Check out the SSMA details here.  There may be an idea or two in them.  If you can't use an embeded plate with a tube made up of studs welded to the embed, I would try to get the studs to by pass the slab instead of bear on it.  Otherwise, it's time to get creative.

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