×
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

Historic Bar Joist Identity

Historic Bar Joist Identity

Historic Bar Joist Identity

(OP)
I have come across a historic bar joist product on a project and am having trouble tracking down anything like it in the Steel Joist Institute catalog.

The joist is 16" deep. The top chord is 1. 1/2" angles, spaced by a 1/2" round web. The web is a continuous, albeit bent, member.
The bottom chord is also a pair of 1/2" rounds, welded on either side of this serpentine web configuration.

Per my limited research, the original bar joists had top AND bottom chord rounds. I can't find any reference to a system with only rounds on the bottom chord.
Any pointing in the right direction would be appreciated.

A photo of the system is attached.

RE: Historic Bar Joist Identity

Macomber open web joists in the 1930's used round bars for both the top an bottom cords. For a 16" deep joist, the bar diameters don't match your measurements. Perhaps yours are from a slightly different time period. You can download the bar joist portion of the 1934 Carnegie Pocket Companion from this page of my website (just below the middle of the page), see page number 385:
http://www.slideruleera.net/contributions.html

www.SlideRuleEra.net idea
www.VacuumTubeEra.net r2d2

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