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1930 Era Floor beam callout
3

1930 Era Floor beam callout

1930 Era Floor beam callout

(OP)
Hi guys,  I have a project in a building constructed in 1930. The Owner wants to convert the mezzanine into public assembly usage. Original use was office space. The original drawings describe the floor joists as 10" J 8c L's @ 8.96. Right now access is non-existent due to a plaster hard lid ceiling. Before I direct the contractor to do some selective demo the owner would like to know more info. Anybody have or know where to find info on these joists?

RE: 1930 Era Floor beam callout

Probably a designation for section from a Jones and Laughlin Steel catalog. The company name was often abbreviated "J&L". Without the catalog, can't offer any further detail, sorry.

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

RE: 1930 Era Floor beam callout

(OP)
Thanks anyway SlideRule.....Jones & Laughlin was bought out in the 60's (I think) and since then a succesion of companies ending with Arcelor Mittal have swallowed each other. J&L historical info seems to have been long lost. Since they are hard to read I may have misread the old plans. It may be "J Bc L's." I think they are an early proprietary bar joist. SJI first published a Standard Specification in 1928 but not every manufacturer joined up.

RE: 1930 Era Floor beam callout

AISC had a book of ancient shapes. I don't know if its still available.

They have it online for members, but I am not a member now.

http://www.aisc.org/content.aspx?id=17698  

Michael.
Timing has a lot to do with the outcome of a rain dance.

RE: 1930 Era Floor beam callout

nutte - that is fantastic.  

You might scan the whole section (if there's more) and send it over to SlideRuleEra for his website.

 

RE: 1930 Era Floor beam callout

A star for SlideRule as well.  He had the knowledge of those beams.  I just had the book.

RE: 1930 Era Floor beam callout

(OP)
You guys are fantastic. Thanks. I have AISC's Design Guide 15 and it wasn't anywhere in there.

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