Dimensions and section properties for HP18X135

Structural sectional properties for a HP18X135 standard steel section

steel section diagram

US Customary Units

DescriptionSymbolValue
Shape Category / DesignationTypeHP
Section NameNameHP18X135
Cross Sectional AreaA39.9 in2
Section Widthb17.8 in
Section Depthd17.5 in
Flange thicknesstf0.75 in
Web thicknesstw0.75 in
Radius of Gyration about X-Xrx7.43 in
Radius of Gyrations about Y-Yry4.21 in
Moment of Inertia about X-XIx2200 in4
Moment of Intertia about Y-YIy706 in4
Elastic Section Modulus about X-XSx251 in3
Elastic Section Modulus about Y-YSy79.3 in3
Plastic Section Modulus about X-XZx281 in3
Plastic Section Modulus about Y-YZy122 in3
St. Venant Torsional ConstantJ9.12 in4
Warping Torsion ConstantCw49500 in6
Self Weight of sectionWeight135 lb/ft

Metric Units

DescriptionSymbolValue
Shape Category / DesignationTypeHP
Section NameNameHP18X135
Cross Sectional AreaA25742 mm2
Section Widthb452 mm
Section Depthd445 mm
Flange thicknesstf19.1 mm
Web thicknesstw19.1 mm
Radius of Gyration about X-Xrx189 mm
Radius of Gyrations about Y-Yry107 mm
Moment of Inertia about X-XIx916000000 mm4
Moment of Intertia about Y-YIy294000000 mm4
Elastic Section Modulus about X-XSx4113000 mm3
Elastic Section Modulus about Y-YSy1299000 mm3
Plastic Section Modulus about X-XZx4605000 mm3
Plastic Section Modulus about Y-YZy1999000 mm3
St. Venant Torsional ConstantJ3796000 mm4
Warping Torsion ConstantCw13293000000000 mm6
Self Weight of sectionWeight201 kg/m

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

A HP18X135 steel section is a standard North American steel section in the HP - Hollow Pipe category. It weighs 135 lb/ft and has a cross sectional area of 39.9 in2. The height and width of the section are 17.5 in and 17.8 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