W24x84 is a wide flange steel beam that is 24.1 in deep with a 9.02 in flange and weighs 84 lb/ft (125 kg/m). Its metric designation is W610x125. All values below come from the AISC Shapes Database v16.0.
W24x84 Dimensions
| Property | Symbol | Imperial | Metric |
|---|---|---|---|
| Nominal weight | W | 84 lb/ft | 125 kg/m |
| Cross-sectional area | A | 24.7 in² | 15,900 mm² |
| Depth | d | 24.1 in | 612 mm |
| Flange width | bf | 9.02 in | 229 mm |
| Web thickness | tw | 0.47 in | 11.9 mm |
| Flange thickness | tf | 0.77 in | 19.6 mm |
| Distance to web toe of fillet (design) | kdes | 1.27 in | 32.3 mm |
| Distance to web toe of fillet (detailing) | kdet | 2.0625 in | 52.4 mm |
| Web center line to flange toe of fillet | k1 | 1.4375 in | 36.5 mm |
| Distance between web toes of fillets | T | 20 in | 508 mm |
| Workable gage (inner holes) | WGi | 5.5 in | 140 mm |
W24x84 Section Properties
| Property | Symbol | Imperial | Metric |
|---|---|---|---|
| Moment of inertia, x-axis | Ix | 2,370 in⁴ | 986 ×10⁶ mm⁴ |
| Elastic section modulus, x-axis | Sx | 196 in³ | 3,210 ×10³ mm³ |
| Plastic section modulus, x-axis | Zx | 224 in³ | 3,670 ×10³ mm³ |
| Radius of gyration, x-axis | rx | 9.79 in | 249 mm |
| Moment of inertia, y-axis | Iy | 94.4 in⁴ | 39.3 ×10⁶ mm⁴ |
| Elastic section modulus, y-axis | Sy | 20.9 in³ | 342 ×10³ mm³ |
| Plastic section modulus, y-axis | Zy | 32.6 in³ | 534 ×10³ mm³ |
| Radius of gyration, y-axis | ry | 1.95 in | 49.5 mm |
| Torsional constant | J | 3.7 in⁴ | 1,540 ×10³ mm⁴ |
| Warping constant | Cw | 12,800 in⁶ | 3,440 ×10⁹ mm⁶ |
| Effective radius of gyration | rts | 2.37 in | 60.2 mm |
| Distance between flange centroids | ho | 23.3 in | 592 mm |
| Flange slenderness | bf/2tf | 5.86 | 5.86 |
| Web slenderness | h/tw | 45.9 | 45.9 |
W24x84 Weight Calculator
Enter a length to get the total weight of a W24x84 beam. A 20 ft length weighs 1,680 lb.
Uses the AISC nominal weight: 84 lb/ft (125 kg/m).
Beams Similar to W24x84
| Shape | Weight (lb/ft) | Depth (in) | Flange width (in) |
|---|---|---|---|
| W24x76 | 76 | 23.9 | 8.99 |
| W24x94 | 94 | 24.3 | 9.07 |
| W24x68 | 68 | 23.7 | 8.97 |
See every W24 size in the W24 beam sizes chart, or compare all shapes in the wide flange beam sizes chart. Working in millimetres? W24x84 is listed as W610x125 in the metric wide flange beam sizes chart.
W24x84 FAQ
What does W24x84 mean?
W means wide flange. The first number (24) is the nominal depth in inches, and the second number (84) is the weight in pounds per foot. The actual depth of W24x84 is 24.1 in. How to read steel beam sizes.
How much does a W24x84 beam weigh?
W24x84 weighs 84 lb per foot (125 kg per meter). A 20 ft beam weighs about 1,680 lb. Use the calculator above for any length.
What is the metric equivalent of W24x84?
The metric (SI) designation is W610x125: 612 mm deep with a 229 mm flange and 125 kg/m.
How far can a W24x84 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.