Uniform Force Method with brace connected to column web

[mfritze]

Hello,
I have a braced connection with a beam connected to the web of a column (as opposed to the flange in the classical example). Do I use the column eccentricity (e_b) equal to the column_web_thickness/2 when satisfying the zero-moment UFM criteria?

Thanks,

 

[structSU10]

AISC has design guide 29 which goes in depth for brace connections. They have specific sections dedicated to braces that attach to the column web.

 

[JoshPlumSE]

Yes, it is correct to use the tw/2 for that eccentricity. Though many just assume this is equal to zero for simplicity.

I believe (as StructSU10 said) this is discussed in more detail in that design guide.

 

[mfritze]

Thanks. I looked at the design guide and can confirm it is web_thickness/2 however this is typically negligible so as assumed to be 0.