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Newbie with a definitions question!

Newbie with a definitions question!

Newbie with a definitions question!

(OP)
Howdy! I am new to this forum and want to apologize in advance if this is not the right location to post this question.

We are looking over Structural Steel building framing prints and have a question about one notation being used. Most of the beams are called out in a familiar way like W12X65. But some of the roof girders are called out as "W12 x 65k (T OR C)". I am not familiar with the "T OR C" abbreviation. One of my coworkers suggested that maybe it is for Tension Or Compression. Can any one on here confirm if that is correct?

Thank you for your help!

David

RE: Newbie with a definitions question!

I read it as a W12X65 subject to both Tension and Compression, depending on the loading situation...

Seems odd unless this is part of a single braced frame.

Mike McCann, PE, SE (WA)


RE: Newbie with a definitions question!

Yeah, they're likely trying to give connection requirements. There's probably something in the general notes that explains how to determine connection loads for tension members and compression members and they want to ensure the detailer doesn't design them as simple beam connections.

RE: Newbie with a definitions question!

I think it is the design engineer suggesting a W12 that will have 65 kips in Tension or Compression - the fabricator is then expected to design the member for that load.

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RE: Newbie with a definitions question!

(OP)
These answers make sense. Thank you all so much!

RE: Newbie with a definitions question!

Is it part of a braced frame?

Professional and Structural Engineer (ME, NH)
American Concrete Industries
www.americanconcrete.com

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