Steel Section Catalog
UB 686x254x125
EN — Wide Flange (I-beam)
Wide flange beams (W shapes / I-beams) are the most common structural steel profile used in building construction. They are used for beams, columns, and girders in steel-framed buildings and bridges. Designed per AISC 360, Eurocode 3, and NBR 8800.
The UB 686x254x125 steel profile weighs 125.2 kg/m (84.13 lb/ft), has a depth of 677.9 mm (26.69 in), flange width 253 mm (9.96 in). Cross-sectional area: 15,749.6 mm². Moment of inertia Ix = 115,969.55 cm⁴, Iy = 4,381.07 cm⁴.
Cross-section (not to scale)
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth (h) | 677.9 mm | 26.69 in |
| Width (b) | 253 mm | 9.96 in |
| Web thickness (tw) | 11.7 mm | 0.46 in |
| Flange thickness (tf) | 16.2 mm | 0.64 in |
| Fillet radius (r) | 15.2 mm | 0.60 in |
| Weight | 125.2 kg/m | 84.13 lb/ft |
Section Properties
| Property | Metric | Imperial |
|---|---|---|
| Area (A) | 15,749.6 mm² | 24.412 in² |
| Moment of inertia (Ix) | 115,969.55 cm⁴ | 2786.17 in⁴ |
| Moment of inertia (Iy) | 4,381.07 cm⁴ | 105.26 in⁴ |
| Elastic section modulus (Sx) | 3,421.44 cm³ | 208.790 in³ |
| Elastic section modulus (Sy) | 346.33 cm³ | 21.134 in³ |
| Plastic section modulus (Zx) | 3,930.8 cm³ | 239.873 in³ |
| Plastic section modulus (Zy) | 540.56 cm³ | 32.987 in³ |
| Radius of gyration (rx) | 27.14 cm | 10.685 in |
| Radius of gyration (ry) | 5.27 cm | 2.075 in |
Beam Calculator— UB 686x254x125
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mfixed @ 0mfixed @ 6m→kN/m
Results — UB 686x254x125
Mmax
15.0 kN·m
Vmax
15.0 kN
δmax
0.07 mm
L/82467
R115.0 kN| 15.0 kN·mR215.0 kN| -15.0 kN·m
Standard:
