Section properties for S12X31.8

Structural sectional properties for a S12X31.8 standard steel section


steel section diagram
DescriptionSymbolValue
Shape Category / DesignationTypeS
Section NameNameS12X31.8
Cross Sectional AreaA9.31 in2
Section Widthb5 in
Section Depthd12 in
Flange thicknesstf0.544 in
Web thicknesstw0.35 in
Radius of Gyration about X-Xrx4.83 in
Radius of Gyrations about Y-Yry1 in
Moment of Inertia about X-XIx217 in4
Moment of Intertia about Y-YIy9.33 in4
Elastic Section Modulus about X-XSx36.2 in3
Elastic Section Modulus about Y-YSy3.73 in3
Plastic Section Modulus about X-XZx41.8 in3
Plastic Section Modulus about Y-YZy6.44 in3
St. Venant Torsional ConstantJ0.878 in4
Warping Torsion ConstantCw306 in6
Self Weight of section per footWeight31.8 lb/ft

A S12X31.8 steel section is a standard North American steel section in the S - Standard Wide Flange category. It weighs 31.8 lb/ft and has a cross sectional area of 9.31 in2. The height and width of the section are 12 in and 5 in respectively.

The section has a tensile yield capacity of:

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The section has a flexural plastic moment capacity of:

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The section has a flexural elastic moment capacity of:

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