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RE: Old Beam

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I think you are looking at the designation for a channel section. In the AISC manual it is listed as a C8x11.5.  If you are looking at an old set of plans, the detailing back then sometimes used to show the orientation of the channel toes.





Thomas J. Cummings, PE

Manager - Bridge Design Practice

Gannett Fleming Engineers and Architects, P.C.

One Penn Plaza, Suite 2222

250 West 34th Street

New York, NY 10119

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E:  tcummings(--nospam--at)


From: Mauricio Castro [mailto:rico355(--nospam--at)]
Sent: Wednesday, June 20, 2007 7:00 PM
To: seaint(--nospam--at)
Subject: Old Beam


I came across your email address while searching the internet for an old beam's dimensions ( I am currently doing a structural revision of a building built in the 1960's in which I encountered a beam by the name 8 U 11.5 (not actually a U, but its the closest character to it). Could you send me the properties of this beam or maybe its equivalent in todays standards? I have an AISC Steel Construction Manual, 13th edition. I really appreciated it. Thank you.


Mauricio Castro

Civil Engineering Student


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