W10x30 is a wide flange steel beam that is 10.5 in deep with a 5.81 in flange and weighs 30 lb/ft (44.8 kg/m). Its metric designation is W250x44.8. All values below come from the AISC Shapes Database v16.0.
W10x30 Dimensions
| Property | Symbol | Imperial | Metric |
|---|---|---|---|
| Nominal weight | W | 30 lb/ft | 44.8 kg/m |
| Cross-sectional area | A | 8.84 in² | 5,700 mm² |
| Depth | d | 10.5 in | 267 mm |
| Flange width | bf | 5.81 in | 148 mm |
| Web thickness | tw | 0.3 in | 7.62 mm |
| Flange thickness | tf | 0.51 in | 13 mm |
| Distance to web toe of fillet (design) | kdes | 0.81 in | 20.6 mm |
| Distance to web toe of fillet (detailing) | kdet | 1.125 in | 28.6 mm |
| Web center line to flange toe of fillet | k1 | 0.6875 in | 17.5 mm |
| Distance between web toes of fillets | T | 8.25 in | 210 mm |
| Workable gage (inner holes) | WGi | 2.75 in | 69.9 mm |
W10x30 Section Properties
| Property | Symbol | Imperial | Metric |
|---|---|---|---|
| Moment of inertia, x-axis | Ix | 170 in⁴ | 70.8 ×10⁶ mm⁴ |
| Elastic section modulus, x-axis | Sx | 32.4 in³ | 531 ×10³ mm³ |
| Plastic section modulus, x-axis | Zx | 36.6 in³ | 600 ×10³ mm³ |
| Radius of gyration, x-axis | rx | 4.38 in | 111 mm |
| Moment of inertia, y-axis | Iy | 16.7 in⁴ | 6.95 ×10⁶ mm⁴ |
| Elastic section modulus, y-axis | Sy | 5.75 in³ | 94.2 ×10³ mm³ |
| Plastic section modulus, y-axis | Zy | 8.84 in³ | 145 ×10³ mm³ |
| Radius of gyration, y-axis | ry | 1.37 in | 34.8 mm |
| Torsional constant | J | 0.622 in⁴ | 259 ×10³ mm⁴ |
| Warping constant | Cw | 414 in⁶ | 111 ×10⁹ mm⁶ |
| Effective radius of gyration | rts | 1.6 in | 40.6 mm |
| Distance between flange centroids | ho | 9.99 in | 254 mm |
| Flange slenderness | bf/2tf | 5.7 | 5.7 |
| Web slenderness | h/tw | 29.5 | 29.5 |
W10x30 Weight Calculator
Enter a length to get the total weight of a W10x30 beam. A 20 ft length weighs 600 lb.
Uses the AISC nominal weight: 30 lb/ft (44.8 kg/m).
Beams Similar to W10x30
See every W10 size in the W10 beam sizes chart, or compare all shapes in the wide flange beam sizes chart.
W10x30 FAQ
What does W10x30 mean?
W means wide flange. The first number (10) is the nominal depth in inches, and the second number (30) is the weight in pounds per foot. The actual depth of W10x30 is 10.5 in. How to read steel beam sizes.
How much does a W10x30 beam weigh?
W10x30 weighs 30 lb per foot (44.8 kg per meter). A 20 ft beam weighs about 600 lb. Use the calculator above for any length.
What is the metric equivalent of W10x30?
The metric (SI) designation is W250x44.8: 267 mm deep with a 148 mm flange and 44.8 kg/m.
How far can a W10x30 beam span?
Span depends on the load, support conditions, deflection limits and local building code, so it cannot be read from a size table. A licensed structural engineer must size any beam that carries a load.
Source: AISC Shapes Database v16.0, consistent with the AISC Steel Construction Manual, 16th Edition. Last updated: September 2026.
This page is reference information only and is not engineering advice. Do not use it for a specific design without verification by a licensed engineer or architect. Full disclaimer.