Dimensions and section properties for W12X79
Structural sectional properties for a W12X79 standard steel section
US Customary Units
| Description | Symbol | Value |
|---|---|---|
| Shape Category / Designation | Type | W |
| Section Name | Name | W12X79 |
| Cross Sectional Area | A | 23.2 in2 |
| Section Width | b | 12.1 in |
| Section Depth | d | 12.4 in |
| Flange thickness | tf | 0.735 in |
| Web thickness | tw | 0.47 in |
| Radius of Gyration about X-X | rx | 5.34 in |
| Radius of Gyrations about Y-Y | ry | 3.05 in |
| Moment of Inertia about X-X | Ix | 662 in4 |
| Moment of Intertia about Y-Y | Iy | 216 in4 |
| Elastic Section Modulus about X-X | Sx | 107 in3 |
| Elastic Section Modulus about Y-Y | Sy | 35.8 in3 |
| Plastic Section Modulus about X-X | Zx | 119 in3 |
| Plastic Section Modulus about Y-Y | Zy | 54.3 in3 |
| St. Venant Torsional Constant | J | 3.84 in4 |
| Warping Torsion Constant | Cw | 7330 in6 |
| Self Weight of section | Weight | 79 lb/ft |
Metric Units
| Description | Symbol | Value |
|---|---|---|
| Shape Category / Designation | Type | W |
| Section Name | Name | W12X79 |
| Cross Sectional Area | A | 14968 mm2 |
| Section Width | b | 307 mm |
| Section Depth | d | 315 mm |
| Flange thickness | tf | 18.7 mm |
| Web thickness | tw | 11.9 mm |
| Radius of Gyration about X-X | rx | 136 mm |
| Radius of Gyrations about Y-Y | ry | 77 mm |
| Moment of Inertia about X-X | Ix | 276000000 mm4 |
| Moment of Intertia about Y-Y | Iy | 90000000 mm4 |
| Elastic Section Modulus about X-X | Sx | 1753000 mm3 |
| Elastic Section Modulus about Y-Y | Sy | 587000 mm3 |
| Plastic Section Modulus about X-X | Zx | 1950000 mm3 |
| Plastic Section Modulus about Y-Y | Zy | 890000 mm3 |
| St. Venant Torsional Constant | J | 1598000 mm4 |
| Warping Torsion Constant | Cw | 1968000000000 mm6 |
| Self Weight of section | Weight | 118 kg/m |
Note: Metric units have been converted from tabulated imperial values and rounded to a reasonable number of significant figures.
A W12X79 steel section is a standard North American steel section in the W - Wide Flange category. The height and width of the section are 12.4 in (315 mm) and 12.1 in (307 mm) respectively. It weighs 79 lb/ft (118 kg/m) and has a cross sectional area of 23.2 in2 (14968 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