W14x34 is a wide flange steel beam that is 14 in deep with a 6.75 in flange and weighs 34 lb/ft (51 kg/m). Its metric designation is W360x51. All values below come from the AISC Shapes Database v16.0.
W14x34 Dimensions
| Property | Symbol | Imperial | Metric |
|---|---|---|---|
| Nominal weight | W | 34 lb/ft | 51 kg/m |
| Cross-sectional area | A | 10 in² | 6,450 mm² |
| Depth | d | 14 in | 356 mm |
| Flange width | bf | 6.75 in | 171 mm |
| Web thickness | tw | 0.285 in | 7.24 mm |
| Flange thickness | tf | 0.455 in | 11.6 mm |
| Distance to web toe of fillet (design) | kdes | 0.855 in | 21.7 mm |
| Distance to web toe of fillet (detailing) | kdet | 1.1875 in | 30.2 mm |
| Web center line to flange toe of fillet | k1 | 0.75 in | 19.1 mm |
| Distance between web toes of fillets | T | 11.625 in | 295 mm |
| Workable gage (inner holes) | WGi | 3.5 in | 88.9 mm |
W14x34 Section Properties
| Property | Symbol | Imperial | Metric |
|---|---|---|---|
| Moment of inertia, x-axis | Ix | 340 in⁴ | 142 ×10⁶ mm⁴ |
| Elastic section modulus, x-axis | Sx | 48.6 in³ | 796 ×10³ mm³ |
| Plastic section modulus, x-axis | Zx | 54.6 in³ | 895 ×10³ mm³ |
| Radius of gyration, x-axis | rx | 5.83 in | 148 mm |
| Moment of inertia, y-axis | Iy | 23.3 in⁴ | 9.7 ×10⁶ mm⁴ |
| Elastic section modulus, y-axis | Sy | 6.91 in³ | 113 ×10³ mm³ |
| Plastic section modulus, y-axis | Zy | 10.6 in³ | 174 ×10³ mm³ |
| Radius of gyration, y-axis | ry | 1.53 in | 38.9 mm |
| Torsional constant | J | 0.569 in⁴ | 237 ×10³ mm⁴ |
| Warping constant | Cw | 1,070 in⁶ | 287 ×10⁹ mm⁶ |
| Effective radius of gyration | rts | 1.8 in | 45.7 mm |
| Distance between flange centroids | ho | 13.5 in | 343 mm |
| Flange slenderness | bf/2tf | 7.41 | 7.41 |
| Web slenderness | h/tw | 43.1 | 43.1 |
W14x34 Weight Calculator
Enter a length to get the total weight of a W14x34 beam. A 20 ft length weighs 680 lb.
Uses the AISC nominal weight: 34 lb/ft (51 kg/m).
Beams Similar to W14x34
See every W14 size in the W14 beam sizes chart, or compare all shapes in the wide flange beam sizes chart. Working in millimetres? W14x34 is listed as W360x51 in the metric wide flange beam sizes chart.
W14x34 FAQ
What does W14x34 mean?
W means wide flange. The first number (14) is the nominal depth in inches, and the second number (34) is the weight in pounds per foot. The actual depth of W14x34 is 14 in. How to read steel beam sizes.
How much does a W14x34 beam weigh?
W14x34 weighs 34 lb per foot (51 kg per meter). A 20 ft beam weighs about 680 lb. Use the calculator above for any length.
What is the metric equivalent of W14x34?
The metric (SI) designation is W360x51: 356 mm deep with a 171 mm flange and 51 kg/m.
How far can a W14x34 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.