Dimensions and section properties for W12X120

Structural sectional properties for a W12X120 standard steel section

steel section diagram

US Customary Units

DescriptionSymbolValue
Shape Category / DesignationTypeW
Section NameNameW12X120
Cross Sectional AreaA35.2 in2
Section Widthb12.3 in
Section Depthd13.1 in
Flange thicknesstf1.11 in
Web thicknesstw0.71 in
Radius of Gyration about X-Xrx5.51 in
Radius of Gyrations about Y-Yry3.13 in
Moment of Inertia about X-XIx1070 in4
Moment of Intertia about Y-YIy345 in4
Elastic Section Modulus about X-XSx163 in3
Elastic Section Modulus about Y-YSy56 in3
Plastic Section Modulus about X-XZx186 in3
Plastic Section Modulus about Y-YZy85.4 in3
St. Venant Torsional ConstantJ12.9 in4
Warping Torsion ConstantCw12400 in6
Self Weight of sectionWeight120 lb/ft

Metric Units

DescriptionSymbolValue
Shape Category / DesignationTypeW
Section NameNameW12X120
Cross Sectional AreaA22710 mm2
Section Widthb312 mm
Section Depthd333 mm
Flange thicknesstf28.2 mm
Web thicknesstw18 mm
Radius of Gyration about X-Xrx140 mm
Radius of Gyrations about Y-Yry80 mm
Moment of Inertia about X-XIx445000000 mm4
Moment of Intertia about Y-YIy144000000 mm4
Elastic Section Modulus about X-XSx2671000 mm3
Elastic Section Modulus about Y-YSy918000 mm3
Plastic Section Modulus about X-XZx3048000 mm3
Plastic Section Modulus about Y-YZy1399000 mm3
St. Venant Torsional ConstantJ5369000 mm4
Warping Torsion ConstantCw3330000000000 mm6
Self Weight of sectionWeight179 kg/m

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

A W12X120 steel section is a standard North American steel section in the W - Wide Flange category. It weighs 120 lb/ft and has a cross sectional area of 35.2 in2. The height and width of the section are 13.1 in and 12.3 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