Dimensions and section properties for W12X120
Structural sectional properties for a W12X120 standard steel section
US Customary Units
| Description | Symbol | Value |
|---|---|---|
| Shape Category / Designation | Type | W |
| Section Name | Name | W12X120 |
| Cross Sectional Area | A | 35.2 in2 |
| Section Width | b | 12.3 in |
| Section Depth | d | 13.1 in |
| Flange thickness | tf | 1.11 in |
| Web thickness | tw | 0.71 in |
| Radius of Gyration about X-X | rx | 5.51 in |
| Radius of Gyrations about Y-Y | ry | 3.13 in |
| Moment of Inertia about X-X | Ix | 1070 in4 |
| Moment of Intertia about Y-Y | Iy | 345 in4 |
| Elastic Section Modulus about X-X | Sx | 163 in3 |
| Elastic Section Modulus about Y-Y | Sy | 56 in3 |
| Plastic Section Modulus about X-X | Zx | 186 in3 |
| Plastic Section Modulus about Y-Y | Zy | 85.4 in3 |
| St. Venant Torsional Constant | J | 12.9 in4 |
| Warping Torsion Constant | Cw | 12400 in6 |
| Self Weight of section | Weight | 120 lb/ft |
Metric Units
| Description | Symbol | Value |
|---|---|---|
| Shape Category / Designation | Type | W |
| Section Name | Name | W12X120 |
| Cross Sectional Area | A | 22710 mm2 |
| Section Width | b | 312 mm |
| Section Depth | d | 333 mm |
| Flange thickness | tf | 28.2 mm |
| Web thickness | tw | 18 mm |
| Radius of Gyration about X-X | rx | 140 mm |
| Radius of Gyrations about Y-Y | ry | 80 mm |
| Moment of Inertia about X-X | Ix | 445000000 mm4 |
| Moment of Intertia about Y-Y | Iy | 144000000 mm4 |
| Elastic Section Modulus about X-X | Sx | 2671000 mm3 |
| Elastic Section Modulus about Y-Y | Sy | 918000 mm3 |
| Plastic Section Modulus about X-X | Zx | 3048000 mm3 |
| Plastic Section Modulus about Y-Y | Zy | 1399000 mm3 |
| St. Venant Torsional Constant | J | 5369000 mm4 |
| Warping Torsion Constant | Cw | 3330000000000 mm6 |
| Self Weight of section | Weight | 179 kg/m |
Note: Metric units have been converted from tabulated imperial values and rounded to a reasonable number of significant figures.
A W12X120 steel section is a standard North American steel section in the W - Wide Flange category. The height and width of the section are 13.1 in (333 mm) and 12.3 in (312 mm) respectively. It weighs 120 lb/ft (179 kg/m) and has a cross sectional area of 35.2 in2 (22710 mm2).
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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