×
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

Bolts For Connection Of Bracings
4

Bolts For Connection Of Bracings

Bolts For Connection Of Bracings

(OP)
Hello everyone,

I have a question about the connection for the bracings:

Some people use the slip-critical bolts for the connection of bracings, some people use bearing-type bolts, which is right?

Thank you very much!


Best regards,


Ping

RE: Bolts For Connection Of Bracings

Either are "right".  Generally engineers prefer to use tightened bolts on bracing to minimize slip and reduce any secondary deflections due to the slip in the bolt connections.

 

RE: Bolts For Connection Of Bracings

Slip critical bolting is also mandatory under certain seismic and fatigue considerations.



If you "heard" it on the internet, it's guilty until proven innocent. - DCS

RE: Bolts For Connection Of Bracings

For seismic design, slip critical faying surfaces and bolt pretension is required, but the bolts can still be designed as bearing bolts.

Bearing bolts are stronger than slip critical bolts.  If you call for slip critical, expect more bolts.

RE: Bolts For Connection Of Bracings

I would say the allowable stress (strength) used for design is higher when checking Type N (or Type X) bolts verses Type F bolts.  Since it is the same bolt, I don't agree that the bolt is 'stronger.'  Also, there is a lot of confusion about when you may use the Type X values, and I have convinced engineers and contractors in the past they don't want to go there.  I don't recall the last time I used other than a Type F.  Good luck!

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