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# Moment Connection - Compression Plate Check

## Moment Connection - Compression Plate Check

(OP)
Hello,

I was wondering if anyone knows how to address a plate - compression capacity check within a moment connection according to either CISC (preferrably) or AISC. My CISC handbook doesn't seem to provide much guidance on it and I know it is a fairly involved process. The professional engineers I work under have simply said, use a PL -X- thickness to avoid the issue all together. I would just like to try it and run the numbers as this is the first moment connection that I've ever designed.

I was also wondering how to assess the flexural capacity of a bent plate? In a skewed, simple shear connection, how can you assess whether a stiffener gusset would be required to maintain the plates rigidity?

Can anyone recommend some good connection design books for future assistance with such questions? I don't have a master's degree, but I am reasonably well-versed (academically) in structural engineering.

Thanks in advance for any help provided!

### RE: Moment Connection - Compression Plate Check

What type of moment connection are you talking about?

I do a compression check on a compression side of flange plate moment connection. You just calculate a KL/r ratio based on the unbraced length of the plate and it's assumed end conditions. AISC section J4.4 says that you can assume full yield if KL/r < 25. But, if the slenderness is greater than that then you use chapter E to calculate compressive capacity. The only tricky part is deciding what K value to use.... we use 0.65.

AISC has a set of connection design examples available for download. You might check out their website as I believe they are posted there.

### RE: Moment Connection - Compression Plate Check

(OP)
Thanks for the reply! I will look into the AISC website, but I don't have a membership so it may be in vain lol

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