Steel Section Catalog
UB 178x102x19
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 178x102x19 steel profile weighs 19.0 kg/m (12.77 lb/ft), has a depth of 177.8 mm (7.00 in), flange width 101.2 mm (3.98 in). Cross-sectional area: 2,376.6 mm². Moment of inertia Ix = 1,324.78 cm⁴, Iy = 136.61 cm⁴.
Cross-section (not to scale)
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth (h) | 177.8 mm | 7.00 in |
| Width (b) | 101.2 mm | 3.98 in |
| Web thickness (tw) | 4.8 mm | 0.19 in |
| Flange thickness (tf) | 7.9 mm | 0.31 in |
| Fillet radius (r) | 7.6 mm | 0.30 in |
| Weight | 19.0 kg/m | 12.77 lb/ft |
Section Properties
| Property | Metric | Imperial |
|---|---|---|
| Area (A) | 2,376.6 mm² | 3.684 in² |
| Moment of inertia (Ix) | 1,324.78 cm⁴ | 31.83 in⁴ |
| Moment of inertia (Iy) | 136.61 cm⁴ | 3.28 in⁴ |
| Elastic section modulus (Sx) | 149.02 cm³ | 9.094 in³ |
| Elastic section modulus (Sy) | 27 cm³ | 1.648 in³ |
| Plastic section modulus (Zx) | 167.32 cm³ | 10.211 in³ |
| Plastic section modulus (Zy) | 41.39 cm³ | 2.526 in³ |
| Radius of gyration (rx) | 7.47 cm | 2.941 in |
| Radius of gyration (ry) | 2.4 cm | 0.945 in |
Beam Calculator— UB 178x102x19
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mfixed @ 0mfixed @ 6m→kN/m
Results — UB 178x102x19
Mmax
15.0 kN·m
Vmax
15.0 kN
δmax
6.37 mm
L/942
R115.0 kN| 15.0 kN·mR215.0 kN| -15.0 kN·m
Standard:
