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Fwd: ASD9 Chapter K

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While checking a beam for sidesway web buckling(Section K1.5), I noticed that 
eqns K1-6 and K1-7 do not include Fsuby. If you calculate the equations as 
shown, you end up with a in^2 unit, not kips as I would expect. I'm assuming 
that the 6800 value must have a ksi unit but wouldn't the limits vary based 
upon a 36 ksi vs 50 ksi yield stress or is this already factored in? Chapter 
K of the LRFD spec's is similar.

TIA,

Charlie Canitz,PE
Bel Air, MD

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