Steel Section Catalog
UB 356x171x45
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 356x171x45 steel profile weighs 45.0 kg/m (30.24 lb/ft), has a depth of 351.4 mm (13.83 in), flange width 171.1 mm (6.74 in). Cross-sectional area: 5,643.3 mm². Moment of inertia Ix = 11,826.34 cm⁴, Iy = 810.74 cm⁴.
Cross-section (not to scale)
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth (h) | 351.4 mm | 13.83 in |
| Width (b) | 171.1 mm | 6.74 in |
| Web thickness (tw) | 7 mm | 0.28 in |
| Flange thickness (tf) | 9.7 mm | 0.38 in |
| Fillet radius (r) | 10.2 mm | 0.40 in |
| Weight | 45.0 kg/m | 30.24 lb/ft |
Section Properties
| Property | Metric | Imperial |
|---|---|---|
| Area (A) | 5,643.3 mm² | 8.747 in² |
| Moment of inertia (Ix) | 11,826.34 cm⁴ | 284.13 in⁴ |
| Moment of inertia (Iy) | 810.74 cm⁴ | 19.48 in⁴ |
| Elastic section modulus (Sx) | 673.1 cm³ | 41.075 in³ |
| Elastic section modulus (Sy) | 94.77 cm³ | 5.783 in³ |
| Plastic section modulus (Zx) | 760 cm³ | 46.378 in³ |
| Plastic section modulus (Zy) | 146.05 cm³ | 8.913 in³ |
| Radius of gyration (rx) | 14.48 cm | 5.701 in |
| Radius of gyration (ry) | 3.79 cm | 1.492 in |
Beam Calculator— UB 356x171x45
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mfixed @ 0mfixed @ 6m→kN/m
Results — UB 356x171x45
Mmax
15.0 kN·m
Vmax
15.0 kN
δmax
0.71 mm
L/8410
R115.0 kN| 15.0 kN·mR215.0 kN| -15.0 kN·m
Standard:
