G4Rectangular HSS, box sections, and other singly and doubly symmetric members

The nominal shear strength, $V_{n}$, is

(G4-1)

For rectangular HSS and box sections

$A_{w}=2 h t$, in. ${ }^{2}\left(\mathrm{~mm}^{2}\right)$

• $\begin{aligned} C_{v 2} & =\text { web shear buckling strength coefficient, as defined in Section G2.2, with } \\ & h / t_{w}=h / t \text { and } k_{v}=5\end{aligned}$
• $\begin{aligned} h & =\text { width resisting the shear force, taken as the clear distance between the flanges } \\ & \text { less the inside corner radius on each side for HSS or the clear distance between } \\ & \text { flanges for box sections, in. (mm). If the corner radius is not known, } h \text { shall be } \\ & \text { taken as the corresponding outside dimension minus 3 times the thickness. }\end{aligned}$
• $t \quad$ = design wall thickness, as defined in Section B4.2, in. (mm)

For other singly or doubly symmetric shapes

• $A_{w}=\text { area of web or webs, taken as the sum of the overall depth times the web }$ thickness, $d t_{w}$, in. ${ }^{2}\left(\mathrm{~mm}^{2}\right)$
• $\begin{aligned} C_{v 2} & =\text { web shear buckling strength coefficient, as defined in Section G2.2, with } \\ & h / t_{w}=h / t \text { and } k_{v}=5\end{aligned}$
• $h \quad=$ width resisting the shear force, in. (mm)
• = for built-up welded sections, the clear distance between flanges, in. (mm)
• = for built-up bolted sections, the distance between fastener lines, in. (mm)
• $t \quad$ = thickness of web, as defined in Section B4, in. (mm)