Dimensions and section properties for WT4X20

Structural sectional properties for a WT4X20 standard steel section

steel section diagram

US Customary Units

DescriptionSymbolValue
Shape Category / DesignationTypeWT
Section NameNameWT4X20
Cross Sectional AreaA5.87 in2
Section Widthb8.07 in
Section Depthd4.13 in
Flange thicknesstf0.56 in
Web thicknesstw0.36 in
Radius of Gyration about X-Xrx0.988 in
Radius of Gyrations about Y-Yry2.04 in
Moment of Inertia about X-XIx5.73 in4
Moment of Intertia about Y-YIy24.5 in4
Elastic Section Modulus about X-XSx1.69 in3
Elastic Section Modulus about Y-YSy6.08 in3
Plastic Section Modulus about X-XZx3.25 in3
Plastic Section Modulus about Y-YZy9.24 in3
St. Venant Torsional ConstantJ0.558 in4
Warping Torsion ConstantCw0.715 in6
Self Weight of sectionWeight20 lb/ft

Metric Units

DescriptionSymbolValue
Shape Category / DesignationTypeWT
Section NameNameWT4X20
Cross Sectional AreaA3787 mm2
Section Widthb205 mm
Section Depthd105 mm
Flange thicknesstf14.2 mm
Web thicknesstw9.1 mm
Radius of Gyration about X-Xrx25 mm
Radius of Gyrations about Y-Yry52 mm
Moment of Inertia about X-XIx2000000 mm4
Moment of Intertia about Y-YIy10000000 mm4
Elastic Section Modulus about X-XSx28000 mm3
Elastic Section Modulus about Y-YSy100000 mm3
Plastic Section Modulus about X-XZx53000 mm3
Plastic Section Modulus about Y-YZy151000 mm3
St. Venant Torsional ConstantJ232000 mm4
Warping Torsion ConstantCw0 mm6
Self Weight of sectionWeight30 kg/m

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

A WT4X20 steel section is a standard North American steel section in the WT - Tee Sections category. It weighs 20 lb/ft and has a cross sectional area of 5.87 in2. The height and width of the section are 4.13 in and 8.07 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