Section properties for W8X31

Structural sectional properties for a W8X31 standard steel section


steel section diagram
DescriptionSymbolValue
Shape Category / DesignationTypeW
Section NameNameW8X31
Cross Sectional AreaA9.13 in2
Section Widthb8 in
Section Depthd8 in
Flange thicknesstf0.435 in
Web thicknesstw0.285 in
Radius of Gyration about X-Xrx3.47 in
Radius of Gyrations about Y-Yry2.02 in
Moment of Inertia about X-XIx110 in4
Moment of Intertia about Y-YIy37.1 in4
Elastic Section Modulus about X-XSx27.5 in3
Elastic Section Modulus about Y-YSy9.27 in3
Plastic Section Modulus about X-XZx30.4 in3
Plastic Section Modulus about Y-YZy14.1 in3
St. Venant Torsional ConstantJ0.536 in4
Warping Torsion ConstantCw530 in6
Self Weight of section per footWeight31 lb/ft

A W8X31 steel section is a standard North American steel section in the W - Wide Flange category. It weighs 31 lb/ft and has a cross sectional area of 9.13 in2. The height and width of the section are 8 in and 8 in respectively.

The section has a tensile yield capacity of:

kip

The section has a flexural plastic moment capacity of:

kip-ft

The section has a flexural elastic moment capacity of:

kip-ft