Dimensions and section properties for HP18X135
Structural sectional properties for a HP18X135 standard steel section
US Customary Units
| Description | Symbol | Value |
|---|---|---|
| Shape Category / Designation | Type | HP |
| Section Name | Name | HP18X135 |
| Cross Sectional Area | A | 39.9 in2 |
| Section Width | b | 17.8 in |
| Section Depth | d | 17.5 in |
| Flange thickness | tf | 0.75 in |
| Web thickness | tw | 0.75 in |
| Radius of Gyration about X-X | rx | 7.43 in |
| Radius of Gyrations about Y-Y | ry | 4.21 in |
| Moment of Inertia about X-X | Ix | 2200 in4 |
| Moment of Intertia about Y-Y | Iy | 706 in4 |
| Elastic Section Modulus about X-X | Sx | 251 in3 |
| Elastic Section Modulus about Y-Y | Sy | 79.3 in3 |
| Plastic Section Modulus about X-X | Zx | 281 in3 |
| Plastic Section Modulus about Y-Y | Zy | 122 in3 |
| St. Venant Torsional Constant | J | 9.12 in4 |
| Warping Torsion Constant | Cw | 49500 in6 |
| Self Weight of section | Weight | 135 lb/ft |
Metric Units
| Description | Symbol | Value |
|---|---|---|
| Shape Category / Designation | Type | HP |
| Section Name | Name | HP18X135 |
| Cross Sectional Area | A | 25742 mm2 |
| Section Width | b | 452 mm |
| Section Depth | d | 445 mm |
| Flange thickness | tf | 19.1 mm |
| Web thickness | tw | 19.1 mm |
| Radius of Gyration about X-X | rx | 189 mm |
| Radius of Gyrations about Y-Y | ry | 107 mm |
| Moment of Inertia about X-X | Ix | 916000000 mm4 |
| Moment of Intertia about Y-Y | Iy | 294000000 mm4 |
| Elastic Section Modulus about X-X | Sx | 4113000 mm3 |
| Elastic Section Modulus about Y-Y | Sy | 1299000 mm3 |
| Plastic Section Modulus about X-X | Zx | 4605000 mm3 |
| Plastic Section Modulus about Y-Y | Zy | 1999000 mm3 |
| St. Venant Torsional Constant | J | 3796000 mm4 |
| Warping Torsion Constant | Cw | 13293000000000 mm6 |
| Self Weight of section | Weight | 201 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
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