G-2Flanged section

G-2.1

For $x_{u}<D_{r}$, the moment of resistance may be calculated from the equation given in G-1.1.

G-2.2

The limiting value of the moment of resistance of the section may be obtained by the following equation when the ratio $D_{1} / d$ does not exceed 0.2 :

$M_{\mathrm{u}}=0.36 \frac{x_{\mathrm{u}, \max }}{d}\left(1-0.42 \frac{x_{\mathrm{u}, \max }}{d}\right) f_{\mathrm{ck}} b_{\mathrm{w}} d^{2}$

$+0.45 f_{\mathrm{ck}}\left(b_{\mathrm{f}}-b_{\mathrm{w}}\right) D_{\mathrm{f}}\left(d-\frac{D_{\mathrm{f}}}{2}\right)$

where

$M_{u}, x_{u, \max }, d$ and $f_{c}$ are same as in G-1.1,

$b_{f}=$ breadth of the compression face/flange.

$b_{w}=$ breadth of the web, and

$D_{1}=$ thickness of the flange.

G-2.3

For $x_{u, \max }>x_{u}>D_{l}$, the moment of resistance may be calculated by the equations given in G-2.2 when $D_{l} / x_{u}$ does not exceed 0.43 and G-2.2.1 when $D_{l} / x_{u}$ exceeds 0.43; in both cases substituting $x_{u, \max }$ by $x_{u}$.