Dimensions and section properties for W12X79

Structural sectional properties for a W12X79 standard steel section

steel section diagram

US Customary Units

DescriptionSymbolValue
Shape Category / DesignationTypeW
Section NameNameW12X79
Cross Sectional AreaA23.2 in2
Section Widthb12.1 in
Section Depthd12.4 in
Flange thicknesstf0.735 in
Web thicknesstw0.47 in
Radius of Gyration about X-Xrx5.34 in
Radius of Gyrations about Y-Yry3.05 in
Moment of Inertia about X-XIx662 in4
Moment of Intertia about Y-YIy216 in4
Elastic Section Modulus about X-XSx107 in3
Elastic Section Modulus about Y-YSy35.8 in3
Plastic Section Modulus about X-XZx119 in3
Plastic Section Modulus about Y-YZy54.3 in3
St. Venant Torsional ConstantJ3.84 in4
Warping Torsion ConstantCw7330 in6
Self Weight of sectionWeight79 lb/ft

Metric Units

DescriptionSymbolValue
Shape Category / DesignationTypeW
Section NameNameW12X79
Cross Sectional AreaA14968 mm2
Section Widthb307 mm
Section Depthd315 mm
Flange thicknesstf18.7 mm
Web thicknesstw11.9 mm
Radius of Gyration about X-Xrx136 mm
Radius of Gyrations about Y-Yry77 mm
Moment of Inertia about X-XIx276000000 mm4
Moment of Intertia about Y-YIy90000000 mm4
Elastic Section Modulus about X-XSx1753000 mm3
Elastic Section Modulus about Y-YSy587000 mm3
Plastic Section Modulus about X-XZx1950000 mm3
Plastic Section Modulus about Y-YZy890000 mm3
St. Venant Torsional ConstantJ1598000 mm4
Warping Torsion ConstantCw1968000000000 mm6
Self Weight of sectionWeight118 kg/m

Note: Metric units have been converted from tabulated imperial values and rounded to a reasonable number of significant figures.

A W12X79 steel section is a standard North American steel section in the W - Wide Flange category. It weighs 79 lb/ft and has a cross sectional area of 23.2 in2. The height and width of the section are 12.4 in and 12.1 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