Steel Section Catalog
UB 305x102x33
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 305x102x33 steel profile weighs 32.8 kg/m (22.04 lb/ft), has a depth of 312.7 mm (12.31 in), flange width 102.4 mm (4.03 in). Cross-sectional area: 4,133.1 mm². Moment of inertia Ix = 6,398.74 cm⁴, Iy = 193.97 cm⁴.
Cross-section (not to scale)
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth (h) | 312.7 mm | 12.31 in |
| Width (b) | 102.4 mm | 4.03 in |
| Web thickness (tw) | 6.6 mm | 0.26 in |
| Flange thickness (tf) | 10.8 mm | 0.43 in |
| Fillet radius (r) | 7.6 mm | 0.30 in |
| Weight | 32.8 kg/m | 22.04 lb/ft |
Section Properties
| Property | Metric | Imperial |
|---|---|---|
| Area (A) | 4,133.1 mm² | 6.406 in² |
| Moment of inertia (Ix) | 6,398.74 cm⁴ | 153.73 in⁴ |
| Moment of inertia (Iy) | 193.97 cm⁴ | 4.66 in⁴ |
| Elastic section modulus (Sx) | 409.26 cm³ | 24.975 in³ |
| Elastic section modulus (Sy) | 37.88 cm³ | 2.312 in³ |
| Plastic section modulus (Zx) | 473.7 cm³ | 28.907 in³ |
| Plastic section modulus (Zy) | 59.79 cm³ | 3.649 in³ |
| Radius of gyration (rx) | 12.44 cm | 4.898 in |
| Radius of gyration (ry) | 2.17 cm | 0.854 in |
Beam Calculator— UB 305x102x33
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mfixed @ 0mfixed @ 6m→kN/m
Results — UB 305x102x33
Mmax
15.0 kN·m
Vmax
15.0 kN
δmax
1.32 mm
L/4550
R115.0 kN| 15.0 kN·mR215.0 kN| -15.0 kN·m
Standard:
