W24x55 is a wide flange steel beam that is 23.6 in deep with a 7.01 in flange and weighs 55 lb/ft (82 kg/m). Its metric designation is W610x82. All values below come from the AISC Shapes Database v16.0.
W24x55 Dimensions
| Property | Symbol | Imperial | Metric |
|---|---|---|---|
| Nominal weight | W | 55 lb/ft | 82 kg/m |
| Cross-sectional area | A | 16.2 in² | 10,500 mm² |
| Depth | d | 23.6 in | 599 mm |
| Flange width | bf | 7.01 in | 178 mm |
| Web thickness | tw | 0.395 in | 10 mm |
| Flange thickness | tf | 0.505 in | 12.8 mm |
| Distance to web toe of fillet (design) | kdes | 1.01 in | 25.7 mm |
| Distance to web toe of fillet (detailing) | kdet | 1.4375 in | 36.5 mm |
| Web center line to flange toe of fillet | k1 | 1 in | 25.4 mm |
| Distance between web toes of fillets | T | 20.75 in | 527 mm |
| Workable gage (inner holes) | WGi | 3.5 in | 88.9 mm |
W24x55 Section Properties
| Property | Symbol | Imperial | Metric |
|---|---|---|---|
| Moment of inertia, x-axis | Ix | 1,350 in⁴ | 562 ×10⁶ mm⁴ |
| Elastic section modulus, x-axis | Sx | 114 in³ | 1,870 ×10³ mm³ |
| Plastic section modulus, x-axis | Zx | 134 in³ | 2,200 ×10³ mm³ |
| Radius of gyration, x-axis | rx | 9.11 in | 231 mm |
| Moment of inertia, y-axis | Iy | 29.1 in⁴ | 12.1 ×10⁶ mm⁴ |
| Elastic section modulus, y-axis | Sy | 8.3 in³ | 136 ×10³ mm³ |
| Plastic section modulus, y-axis | Zy | 13.3 in³ | 218 ×10³ mm³ |
| Radius of gyration, y-axis | ry | 1.34 in | 34 mm |
| Torsional constant | J | 1.18 in⁴ | 491 ×10³ mm⁴ |
| Warping constant | Cw | 3,870 in⁶ | 1,040 ×10⁹ mm⁶ |
| Effective radius of gyration | rts | 1.72 in | 43.7 mm |
| Distance between flange centroids | ho | 23.1 in | 587 mm |
| Flange slenderness | bf/2tf | 6.94 | 6.94 |
| Web slenderness | h/tw | 54.6 | 54.6 |
W24x55 Weight Calculator
Enter a length to get the total weight of a W24x55 beam. A 20 ft length weighs 1,100 lb.
Uses the AISC nominal weight: 55 lb/ft (82 kg/m).
Beams Similar to W24x55
| Shape | Weight (lb/ft) | Depth (in) | Flange width (in) |
|---|---|---|---|
| W24x62 | 62 | 23.7 | 7.04 |
| W24x68 | 68 | 23.7 | 8.97 |
| W24x76 | 76 | 23.9 | 8.99 |
See every W24 size in the W24 beam sizes chart, or compare all shapes in the wide flange beam sizes chart. Working in millimetres? W24x55 is listed as W610x82 in the metric wide flange beam sizes chart.
W24x55 FAQ
What does W24x55 mean?
W means wide flange. The first number (24) is the nominal depth in inches, and the second number (55) is the weight in pounds per foot. The actual depth of W24x55 is 23.6 in. How to read steel beam sizes.
How much does a W24x55 beam weigh?
W24x55 weighs 55 lb per foot (82 kg per meter). A 20 ft beam weighs about 1,100 lb. Use the calculator above for any length.
What is the metric equivalent of W24x55?
The metric (SI) designation is W610x82: 599 mm deep with a 178 mm flange and 82 kg/m.
How far can a W24x55 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.