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cold formed steel compression limit
- Thread starter casasf
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rowingengineer
Structural
It changes between codes, and load type. For EQ you can have an overriding requirement depending on the system being used and design class
"Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning."
"Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning."
Note that the slender ratio is only a practical index. When it goes beyond the recommended limit, the allowable stress/strength will be too small for practical purposes. You can calculate the result resulting allowable stress/strength by using any code provided formula/equation for compression to get a feel.
rowingengineer
Structural
Retired13, are you sure? Seems like a big statement to make. Wouldn't the slenderness ratio be a way to control second order effects within a compression member.
"Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning."
"Programming today is a race between software engineers striving to build bigger and better idiot-proof programs, and the Universe trying to produce bigger and better idiots. So far, the Universe is winning."
In 1999, the AISI committee removed the KL/r limit (of 200) from the code. I think their reasoning was that (at that slenderness ratio) you'd wind up with such a ridiculously uneconomic design with Cold Form that there was no reason to include it.
You can still find the kl/r≤200 recommendation in AISI S100-16C. I stress recommendation because if we're talking about a member with, say, a kl/r of 205 that is seeing extremely low compression stress and no bending, I'd probably run with it.
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