×
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

Steel Column

Steel Column

Steel Column

(OP)
I am trying to design steel column. As shown on attachment beam is 4in away from column. And beam has torsional loading. To check column do i have to include Mx moment and My moment both. what eccentricity i have to include for My moment.


 

RE: Steel Column

I would consider cutting the tube column and cantilevering the other beam over the column to pick up the other beam. This connection would not transfer any moment or toresion to the column.

Definitely torsional loading here on the column otherwse.    

Mike McCann
MMC Engineering
http://mmcengineering.tripod.com
 

RE: Steel Column

(OP)
if i will consider torsion loading i will add additional moment
Mx from connection eccentricity = Beam reaction times distance between column center and connection ..
Also additional moment My (torsion moment = beam reaction times 8" which is distance between column center and load.)
so there will be biaxial moment and i will check column for that.

 

RE: Steel Column

Agree with Mike that cantilevering an orthogonal beam will take out the column bending.  I don't see that the column is in torsion anyway, just bending.

RE: Steel Column

(OP)
I agree but column is continuous so i can not continue orthogonal beam to pick up the other beam.

RE: Steel Column

Anyway, if a concept issue is the matter, intervening members are no other thing than means to pass loads to support. Hence following your sketch, taking what would be the vertical reaction of an ordinary beam placed at 8 inches from the axis of the column would give a similar answer to placing the same reaction at 4 inches ... plus the torsion moment. So, e = 8 inches for the vertical reaction of the beam in a simplified way, just vector mechanics.

Other than that, follow analysis.

RE: Steel Column

ishvaaag has it.  Beam reaction x 8".  That's the moment applied to the column about that axis.  No moment about the other axis.

RE: Steel Column

(OP)
thank you

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