Dimensions and section properties for S20X66

Structural sectional properties for a S20X66 standard steel section

steel section diagram

US Customary Units

DescriptionSymbolValue
Shape Category / DesignationTypeS
Section NameNameS20X66
Cross Sectional AreaA19.4 in2
Section Widthb6.26 in
Section Depthd20 in
Flange thicknesstf0.795 in
Web thicknesstw0.505 in
Radius of Gyration about X-Xrx7.83 in
Radius of Gyrations about Y-Yry1.19 in
Moment of Inertia about X-XIx1190 in4
Moment of Intertia about Y-YIy27.5 in4
Elastic Section Modulus about X-XSx119 in3
Elastic Section Modulus about Y-YSy8.78 in3
Plastic Section Modulus about X-XZx139 in3
Plastic Section Modulus about Y-YZy15.4 in3
St. Venant Torsional ConstantJ3.58 in4
Warping Torsion ConstantCw2530 in6
Self Weight of sectionWeight66 lb/ft

Metric Units

DescriptionSymbolValue
Shape Category / DesignationTypeS
Section NameNameS20X66
Cross Sectional AreaA12516 mm2
Section Widthb159 mm
Section Depthd508 mm
Flange thicknesstf20.2 mm
Web thicknesstw12.8 mm
Radius of Gyration about X-Xrx199 mm
Radius of Gyrations about Y-Yry30 mm
Moment of Inertia about X-XIx495000000 mm4
Moment of Intertia about Y-YIy11000000 mm4
Elastic Section Modulus about X-XSx1950000 mm3
Elastic Section Modulus about Y-YSy144000 mm3
Plastic Section Modulus about X-XZx2278000 mm3
Plastic Section Modulus about Y-YZy252000 mm3
St. Venant Torsional ConstantJ1490000 mm4
Warping Torsion ConstantCw679000000000 mm6
Self Weight of sectionWeight98 kg/m

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

A S20X66 steel section is a standard North American steel section in the S - Standard Wide Flange category. It weighs 66 lb/ft and has a cross sectional area of 19.4 in2. The height and width of the section are 20 in and 6.26 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