×
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

HSS conn to precast

HSS conn to precast

HSS conn to precast

(OP)
I wanted to get a second opinion on a detail that I am working on. It is a HSS beam connection to an embed plate within a precast wall panel. Please see the attached. The HSS has both vert and horz loads on it. Is this an economical and practical solution?

RE: HSS conn to precast

I don't like the U-shaped plate. Why the 1 1/2" setback? I would just use a permanent seat angle. The top is stabilized by the continuous roof angle.

RE: HSS conn to precast

(OP)
Spats,

The 1.5" setback is for the welder.

RE: HSS conn to precast

Does the connection at the other end of this beam allow for thermal movement?

RE: HSS conn to precast

(OP)
Hawkz,

Good point. The other end is a connection into a HSS column @ one location and web of a W8 at another location. I haven't detailed those yet and may be I'll leave those for the steel contr to deal with.

For this connection though, I am wondering if instead of the weld I could specify thru bolts.

RE: HSS conn to precast

You could just use a standard seated connection with the top angle in place.  If you leave both angles unstiffened.  Use side turned down welds one on each side to weld the tube to the bottom angle.  The top whether continous or not simply welds on the outside tip of the leg.  This is considered to be a flexible simple connection since it is assumed that the angles will allow the beam to still rotate at its ends.  With the high and low angle you'll be able to handle the vertical and horizontal reactions and any torque in the beam.  A larger embed will allow the studs to gain maximum strength and also give you some more play in the field when fitting up.  

Now if we stick with your concept which is something I had never considered, you could replace the U-shaped plate with two seperate angles.  Just like a W-shape beam with a double angled connection.  That would allow for easier fit up.  In fact the with the seat angle the entire connection could be field welded if you don't have enough slip on the other connection.  Because this entire side will be welded I prefer the seated connection since it allows for more field play.      

John Southard, M.S., P.E.
http://www.pdhlibrary.com

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