Section properties for W21X122
Structural sectional properties for a W21X122 standard steel section
| Description | Symbol | Value |
|---|---|---|
| Shape Category / Designation | Type | W |
| Section Name | Name | W21X122 |
| Cross Sectional Area | A | 35.9 in2 |
| Section Width | b | 12.4 in |
| Section Depth | d | 21.7 in |
| Flange thickness | tf | 0.96 in |
| Web thickness | tw | 0.6 in |
| Radius of Gyration about X-X | rx | 9.09 in |
| Radius of Gyrations about Y-Y | ry | 2.92 in |
| Moment of Inertia about X-X | Ix | 2960 in4 |
| Moment of Intertia about Y-Y | Iy | 305 in4 |
| Elastic Section Modulus about X-X | Sx | 273 in3 |
| Elastic Section Modulus about Y-Y | Sy | 49.2 in3 |
| Plastic Section Modulus about X-X | Zx | 307 in3 |
| Plastic Section Modulus about Y-Y | Zy | 75.6 in3 |
| St. Venant Torsional Constant | J | 8.98 in4 |
| Warping Torsion Constant | Cw | 32700 in6 |
| Self Weight of section per foot | Weight | 122 lb/ft |
A W21X122 steel section is a standard North American steel section in the W - Wide Flange category. It weighs 122 lb/ft and has a cross sectional area of 35.9 in2. The height and width of the section are 21.7 in and 12.4 in respectively.
The section has a tensile yield capacity of:
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The section has a flexural plastic moment capacity of:
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The section has a flexural elastic moment capacity of:
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