Dimensions and section properties for W12X45

Structural sectional properties for a W12X45 standard steel section

steel section diagram

US Customary Units

DescriptionSymbolValue
Shape Category / DesignationTypeW
Section NameNameW12X45
Cross Sectional AreaA13.1 in2
Section Widthb8.05 in
Section Depthd12.1 in
Flange thicknesstf0.575 in
Web thicknesstw0.335 in
Radius of Gyration about X-Xrx5.15 in
Radius of Gyrations about Y-Yry1.95 in
Moment of Inertia about X-XIx348 in4
Moment of Intertia about Y-YIy50 in4
Elastic Section Modulus about X-XSx57.7 in3
Elastic Section Modulus about Y-YSy12.4 in3
Plastic Section Modulus about X-XZx64.2 in3
Plastic Section Modulus about Y-YZy19 in3
St. Venant Torsional ConstantJ1.26 in4
Warping Torsion ConstantCw1650 in6
Self Weight of sectionWeight45 lb/ft

Metric Units

DescriptionSymbolValue
Shape Category / DesignationTypeW
Section NameNameW12X45
Cross Sectional AreaA8452 mm2
Section Widthb204 mm
Section Depthd307 mm
Flange thicknesstf14.6 mm
Web thicknesstw8.5 mm
Radius of Gyration about X-Xrx131 mm
Radius of Gyrations about Y-Yry50 mm
Moment of Inertia about X-XIx145000000 mm4
Moment of Intertia about Y-YIy21000000 mm4
Elastic Section Modulus about X-XSx946000 mm3
Elastic Section Modulus about Y-YSy203000 mm3
Plastic Section Modulus about X-XZx1052000 mm3
Plastic Section Modulus about Y-YZy311000 mm3
St. Venant Torsional ConstantJ524000 mm4
Warping Torsion ConstantCw443000000000 mm6
Self Weight of sectionWeight67 kg/m

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

A W12X45 steel section is a standard North American steel section in the W - Wide Flange category. It weighs 45 lb/ft and has a cross sectional area of 13.1 in2. The height and width of the section are 12.1 in and 8.05 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