Dimensions and section properties for W12X279

Structural sectional properties for a W12X279 standard steel section

steel section diagram

US Customary Units

DescriptionSymbolValue
Shape Category / DesignationTypeW
Section NameNameW12X279
Cross Sectional AreaA81.9 in2
Section Widthb13.1 in
Section Depthd15.9 in
Flange thicknesstf2.47 in
Web thicknesstw1.53 in
Radius of Gyration about X-Xrx6.16 in
Radius of Gyrations about Y-Yry3.38 in
Moment of Inertia about X-XIx3110 in4
Moment of Intertia about Y-YIy937 in4
Elastic Section Modulus about X-XSx393 in3
Elastic Section Modulus about Y-YSy143 in3
Plastic Section Modulus about X-XZx481 in3
Plastic Section Modulus about Y-YZy220 in3
St. Venant Torsional ConstantJ143 in4
Warping Torsion ConstantCw42000 in6
Self Weight of sectionWeight279 lb/ft

Metric Units

DescriptionSymbolValue
Shape Category / DesignationTypeW
Section NameNameW12X279
Cross Sectional AreaA52839 mm2
Section Widthb333 mm
Section Depthd404 mm
Flange thicknesstf62.7 mm
Web thicknesstw38.9 mm
Radius of Gyration about X-Xrx156 mm
Radius of Gyrations about Y-Yry86 mm
Moment of Inertia about X-XIx1294000000 mm4
Moment of Intertia about Y-YIy390000000 mm4
Elastic Section Modulus about X-XSx6440000 mm3
Elastic Section Modulus about Y-YSy2343000 mm3
Plastic Section Modulus about X-XZx7882000 mm3
Plastic Section Modulus about Y-YZy3605000 mm3
St. Venant Torsional ConstantJ59521000 mm4
Warping Torsion ConstantCw11279000000000 mm6
Self Weight of sectionWeight415 kg/m

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

A W12X279 steel section is a standard North American steel section in the W - Wide Flange category. It weighs 279 lb/ft and has a cross sectional area of 81.9 in2. The height and width of the section are 15.9 in and 13.1 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