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100+ year old steel framed building
3

100+ year old steel framed building

100+ year old steel framed building

(OP)
i need to find information about the old steel beams in this building.  i have 15" deep beams w/ 5.5" flanges that are 1/2" think.  does anyone know what i should use for Fy? and what edition of the AISC code is applicable to the time this building was built?  (the current owner said it was build sometime between 1895-1905) the oldest edition i have in 7th (blue book).  thanks.

RE: 100+ year old steel framed building

2
I have posted this before and therefore it should be here somewhere embedded in these post somewhere.  What you need to do is get a copy of the AISC's 1953 edition of Iron and Steel Beams 1873 to 1952.  This is a historical record of steel and wrought iron beams produced in that time span.  One of the important things to remember is back then there were no standard rollings and each mill produced slightly different shapes.  This reference notes as much of that as was possible.  I hope you see why you need to get a copy or have some one copy the pages you need and send them to you.  The list for what you described is too long to list here. In the time frame you mentioned fs varies from 12500 to 16000 depending on the time and producer.  The yield point runs about 1/2 of the tensile strength, which varies quite a bit, and during the period of 1901 to 1924 wasn't reported at all.

Many of your steel fabricators could be of service as they usually have this reference as does the DOT most of the time.  I'm sure both would be helpful.

Good Luck

RE: 100+ year old steel framed building

MOEIT, if you will post a fax number, I can send you a table of early stress that were use from 1873 to 1952.

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