Dimensions and section properties for W18X106
Structural sectional properties for a W18X106 standard steel section
US Customary Units
| Description | Symbol | Value |
|---|---|---|
| Shape Category / Designation | Type | W |
| Section Name | Name | W18X106 |
| Cross Sectional Area | A | 31.1 in2 |
| Section Width | b | 11.2 in |
| Section Depth | d | 18.7 in |
| Flange thickness | tf | 0.94 in |
| Web thickness | tw | 0.59 in |
| Radius of Gyration about X-X | rx | 7.84 in |
| Radius of Gyrations about Y-Y | ry | 2.66 in |
| Moment of Inertia about X-X | Ix | 1910 in4 |
| Moment of Intertia about Y-Y | Iy | 220 in4 |
| Elastic Section Modulus about X-X | Sx | 204 in3 |
| Elastic Section Modulus about Y-Y | Sy | 39.4 in3 |
| Plastic Section Modulus about X-X | Zx | 230 in3 |
| Plastic Section Modulus about Y-Y | Zy | 60.5 in3 |
| St. Venant Torsional Constant | J | 7.48 in4 |
| Warping Torsion Constant | Cw | 17400 in6 |
| Self Weight of section | Weight | 106 lb/ft |
Metric Units
| Description | Symbol | Value |
|---|---|---|
| Shape Category / Designation | Type | W |
| Section Name | Name | W18X106 |
| Cross Sectional Area | A | 20064 mm2 |
| Section Width | b | 284 mm |
| Section Depth | d | 475 mm |
| Flange thickness | tf | 23.9 mm |
| Web thickness | tw | 15 mm |
| Radius of Gyration about X-X | rx | 199 mm |
| Radius of Gyrations about Y-Y | ry | 68 mm |
| Moment of Inertia about X-X | Ix | 795000000 mm4 |
| Moment of Intertia about Y-Y | Iy | 92000000 mm4 |
| Elastic Section Modulus about X-X | Sx | 3343000 mm3 |
| Elastic Section Modulus about Y-Y | Sy | 646000 mm3 |
| Plastic Section Modulus about X-X | Zx | 3769000 mm3 |
| Plastic Section Modulus about Y-Y | Zy | 991000 mm3 |
| St. Venant Torsional Constant | J | 3113000 mm4 |
| Warping Torsion Constant | Cw | 4673000000000 mm6 |
| Self Weight of section | Weight | 158 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. The height and width of the section are 18.7 in (475 mm) and 11.2 in (284 mm) respectively. It weighs 106 lb/ft (158 kg/m) and has a cross sectional area of 31.1 in2 (20064 mm2).
The section has a tensile yield capacity of:
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The section has a flexural plastic moment capacity of:
kip-ft
The section has a flexural elastic moment capacity of:
kip-ft