×
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

I beam and channel welding

I beam and channel welding

I beam and channel welding

(OP)
Can someone recommend a reference for proper welding (design) of stiffeners, flange straps, doubler plates, inserts, sections, etc. of I beams and channels used on semi-trailer and container chassis frames?
It's all welding, no bolting.
Sometimes bad original design or impact damage or fatigue necessitate reenforcement or repair of a beam that is subject primarily to bending.
Where to place flange straps and what size?  Where to place doublers and what size? What type of welds to use?, etc.

This work is done primarily in repair shops.
Tks,
George

RE: I beam and channel welding

I not aware of any specific books dealing with your application other than OEM specifications.

Here is a book that you might look at to get basic information on the design of equipment, especially reinforcement and stiffening.

"The Design of Weldments by Omer W. Blodgett"

https://ssl.lincolnelectric.com/foundation/item.asp?prodnum=DWS


There are several other books that are very good and inexpensive on this site

RE: I beam and channel welding

I didn't see a code at AWS for welding highway transportation vehicles, but there were some that may be similar:

D15.2-94 Recommended Practices for the Welding of Rails and Related Rail Components for Use by Rail Vehicles

D15.1:2001 Railroad Welding Specification-Cars and Locomotives

D14.3/D14.3M:2000 Specification for Welding Earthmoving and Construction Equipment

D1.5-95 Bridge Welding Code 1995, (used to be the dynamic structures part of AWS D1.1)

Or you can browse for yourself at:
http://www.aws.org/catalogs/

RE: I beam and channel welding

Please note that some newer semi-trailer chassis do NOT permit welding because they are constructed of heat treated steels. Usually you see a warning posted near the front of the chassis.

RE: I beam and channel welding

Correct (and optimum) placement of doublers, straps, stiffeners, etc. will require an FEA or FEA-type analysis.  

Or, if you don't care about optimization, you could use the 'shotgun' approach and use simple beam or column analysis methods with some JUDICIOUS application of engineering judgment and get a conservative solution on where to locate the reinforcement.  You will need to supplement any simple beam-column analysis with calcs that address localized buckling and shear in the web and flanges of the members.  Pete

Thanks!
Pete

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