Lithobeams or Lithobars?

[judgesmails]

I've been confronted with a roof frame using what I believe are lithobars. I spoke with my father, a PE with 50+ years experience, and he recalls them and identified them from a picture. He said we had a catalogue in the office years ago, but it was tossed when we cleaned out some junk that was never used. First, does anyone have any information on lithobars (or lithobeams as some have called them) and second, does anyone know where I can get some loading information on them?

Thanks in advance.

 

[SlideRuleEra]

Here is a lead, (note the spelling)
"Founded: 1929 as Lithibar Company and joined Besser in 1995. The first product of the company was machinery to produce concrete I-beams or bars. Block machines became the company focus in the 1940s followed by product handling equipment."

http://www.besser.com/companyinfo/history.htm

http://www.SlideRuleEra.net

http://www.VacuumTubeEra.net

 

[judgesmails]

Thanks. I just happened to run across a reference in my office library in a very old Kidder-Parker Handbook. They were called Lith-I-Bars and they were manufactured by the Lith-I-Bar Company of Kalamazo, Michigan. Apparently, the University of Michigan department of engineering did some testing on them, so I might try there to see what they have.

Thanks again.