Dimensions and section properties for W21X147

Structural sectional properties for a W21X147 standard steel section

steel section diagram

US Customary Units

DescriptionSymbolValue
Shape Category / DesignationTypeW
Section NameNameW21X147
Cross Sectional AreaA43.2 in2
Section Widthb12.5 in
Section Depthd22.1 in
Flange thicknesstf1.15 in
Web thicknesstw0.72 in
Radius of Gyration about X-Xrx9.17 in
Radius of Gyrations about Y-Yry2.95 in
Moment of Inertia about X-XIx3630 in4
Moment of Intertia about Y-YIy376 in4
Elastic Section Modulus about X-XSx329 in3
Elastic Section Modulus about Y-YSy60.1 in3
Plastic Section Modulus about X-XZx373 in3
Plastic Section Modulus about Y-YZy92.6 in3
St. Venant Torsional ConstantJ15.4 in4
Warping Torsion ConstantCw41100 in6
Self Weight of sectionWeight147 lb/ft

Metric Units

DescriptionSymbolValue
Shape Category / DesignationTypeW
Section NameNameW21X147
Cross Sectional AreaA27871 mm2
Section Widthb318 mm
Section Depthd561 mm
Flange thicknesstf29.2 mm
Web thicknesstw18.3 mm
Radius of Gyration about X-Xrx233 mm
Radius of Gyrations about Y-Yry75 mm
Moment of Inertia about X-XIx1511000000 mm4
Moment of Intertia about Y-YIy157000000 mm4
Elastic Section Modulus about X-XSx5391000 mm3
Elastic Section Modulus about Y-YSy985000 mm3
Plastic Section Modulus about X-XZx6112000 mm3
Plastic Section Modulus about Y-YZy1517000 mm3
St. Venant Torsional ConstantJ6410000 mm4
Warping Torsion ConstantCw11037000000000 mm6
Self Weight of sectionWeight219 kg/m

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

A W21X147 steel section is a standard North American steel section in the W - Wide Flange category. It weighs 147 lb/ft and has a cross sectional area of 43.2 in2. The height and width of the section are 22.1 in and 12.5 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