Dimensions and section properties for W40X278

Structural sectional properties for a W40X278 standard steel section

steel section diagram

US Customary Units

DescriptionSymbolValue
Shape Category / DesignationTypeW
Section NameNameW40X278
Cross Sectional AreaA82.3 in2
Section Widthb12 in
Section Depthd40.2 in
Flange thicknesstf1.81 in
Web thicknesstw1.03 in
Radius of Gyration about X-Xrx15.8 in
Radius of Gyrations about Y-Yry2.52 in
Moment of Inertia about X-XIx20500 in4
Moment of Intertia about Y-YIy521 in4
Elastic Section Modulus about X-XSx1020 in3
Elastic Section Modulus about Y-YSy87.1 in3
Plastic Section Modulus about X-XZx1190 in3
Plastic Section Modulus about Y-YZy140 in3
St. Venant Torsional ConstantJ65 in4
Warping Torsion ConstantCw192000 in6
Self Weight of sectionWeight278 lb/ft

Metric Units

DescriptionSymbolValue
Shape Category / DesignationTypeW
Section NameNameW40X278
Cross Sectional AreaA53097 mm2
Section Widthb305 mm
Section Depthd1021 mm
Flange thicknesstf46 mm
Web thicknesstw26.2 mm
Radius of Gyration about X-Xrx401 mm
Radius of Gyrations about Y-Yry64 mm
Moment of Inertia about X-XIx8533000000 mm4
Moment of Intertia about Y-YIy217000000 mm4
Elastic Section Modulus about X-XSx16715000 mm3
Elastic Section Modulus about Y-YSy1427000 mm3
Plastic Section Modulus about X-XZx19501000 mm3
Plastic Section Modulus about Y-YZy2294000 mm3
St. Venant Torsional ConstantJ27055000 mm4
Warping Torsion ConstantCw51559000000000 mm6
Self Weight of sectionWeight414 kg/m

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

A W40X278 steel section is a standard North American steel section in the W - Wide Flange category. It weighs 278 lb/ft and has a cross sectional area of 82.3 in2. The height and width of the section are 40.2 in and 12 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