Formulas: square and rectangular HSS and box sections

Formula 1

The provisions for local buckling of noncompact rectangular HSS are the same as those in the previous sections of this chapter: $M_{n}=M_{p}$ for $b / t \leq \lambda_{p}$, and a linear transition from $M_{p}$ to $F_{y} S_{x}$ when $\lambda_{p}<b / t \leq \lambda_{r}$.

Formula 2

Formula 3

Found in

• SQUARE AND RECTANGULAR HSS AND BOX SECTIONS