Dimensions and section properties for W18X106

Structural sectional properties for a W18X106 standard steel section

steel section diagram

US Customary Units

DescriptionSymbolValue
Shape Category / DesignationTypeW
Section NameNameW18X106
Cross Sectional AreaA31.1 in2
Section Widthb11.2 in
Section Depthd18.7 in
Flange thicknesstf0.94 in
Web thicknesstw0.59 in
Radius of Gyration about X-Xrx7.84 in
Radius of Gyrations about Y-Yry2.66 in
Moment of Inertia about X-XIx1910 in4
Moment of Intertia about Y-YIy220 in4
Elastic Section Modulus about X-XSx204 in3
Elastic Section Modulus about Y-YSy39.4 in3
Plastic Section Modulus about X-XZx230 in3
Plastic Section Modulus about Y-YZy60.5 in3
St. Venant Torsional ConstantJ7.48 in4
Warping Torsion ConstantCw17400 in6
Self Weight of sectionWeight106 lb/ft

Metric Units

DescriptionSymbolValue
Shape Category / DesignationTypeW
Section NameNameW18X106
Cross Sectional AreaA20064 mm2
Section Widthb284 mm
Section Depthd475 mm
Flange thicknesstf23.9 mm
Web thicknesstw15 mm
Radius of Gyration about X-Xrx199 mm
Radius of Gyrations about Y-Yry68 mm
Moment of Inertia about X-XIx795000000 mm4
Moment of Intertia about Y-YIy92000000 mm4
Elastic Section Modulus about X-XSx3343000 mm3
Elastic Section Modulus about Y-YSy646000 mm3
Plastic Section Modulus about X-XZx3769000 mm3
Plastic Section Modulus about Y-YZy991000 mm3
St. Venant Torsional ConstantJ3113000 mm4
Warping Torsion ConstantCw4673000000000 mm6
Self Weight of sectionWeight158 kg/m

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

A W18X106 steel section is a standard North American steel section in the W - Wide Flange category. It weighs 106 lb/ft and has a cross sectional area of 31.1 in2. The height and width of the section are 18.7 in and 11.2 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