Dimensions and section properties for W30X391

Structural sectional properties for a W30X391 standard steel section

steel section diagram

US Customary Units

DescriptionSymbolValue
Shape Category / DesignationTypeW
Section NameNameW30X391
Cross Sectional AreaA115 in2
Section Widthb15.6 in
Section Depthd33.2 in
Flange thicknesstf2.44 in
Web thicknesstw1.36 in
Radius of Gyration about X-Xrx13.4 in
Radius of Gyrations about Y-Yry3.67 in
Moment of Inertia about X-XIx20700 in4
Moment of Intertia about Y-YIy1550 in4
Elastic Section Modulus about X-XSx1250 in3
Elastic Section Modulus about Y-YSy198 in3
Plastic Section Modulus about X-XZx1450 in3
Plastic Section Modulus about Y-YZy310 in3
St. Venant Torsional ConstantJ173 in4
Warping Torsion ConstantCw366000 in6
Self Weight of sectionWeight391 lb/ft

Metric Units

DescriptionSymbolValue
Shape Category / DesignationTypeW
Section NameNameW30X391
Cross Sectional AreaA74193 mm2
Section Widthb396 mm
Section Depthd843 mm
Flange thicknesstf62 mm
Web thicknesstw34.5 mm
Radius of Gyration about X-Xrx340 mm
Radius of Gyrations about Y-Yry93 mm
Moment of Inertia about X-XIx8616000000 mm4
Moment of Intertia about Y-YIy645000000 mm4
Elastic Section Modulus about X-XSx20484000 mm3
Elastic Section Modulus about Y-YSy3245000 mm3
Plastic Section Modulus about X-XZx23761000 mm3
Plastic Section Modulus about Y-YZy5080000 mm3
St. Venant Torsional ConstantJ72008000 mm4
Warping Torsion ConstantCw98284000000000 mm6
Self Weight of sectionWeight582 kg/m

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

A W30X391 steel section is a standard North American steel section in the W - Wide Flange category. It weighs 391 lb/ft and has a cross sectional area of 115 in2. The height and width of the section are 33.2 in and 15.6 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