Notation in AISC Specification for the Design of Steel Hollow Structural Sections

[csways_]

Does anyone have a clear copy of the 1997 AISC Specification for the Design of Steel Hollow Structural Sections? I have a scanned copy from AISC that is unclear, specifically the equation for F_cr, Equation 4.2-2. In particular the lambda squared. It is unclear if it is lambda, lambda_c, or lambda_r.

Any help would be greatly appreciated. Thanks!

 

[Ingenuity]

In the November, 2000 edition of "Load and Resistance Factor Design Specification for Steel Hollow Structural Sections" it appears to be the same as the 1997 Specification, so in Equation (4.2-2) it is λ­_c:

 

[csways_]

That's it. Thanks!