Steel Section Catalog
U 250x100x3.05
BR — Cold-formed Channel
Cold-formed channels (U shapes) are similar to C shapes but without stiffening lips. Used for light structural framing, supports, and secondary members.
Also known as: U 250x100x3.05 (UK / Australia)
The U 250x100x3.05 steel profile weighs 10.5 kg/m (7.06 lb/ft), has a depth of 250 mm (9.84 in), flange width 100 mm (3.94 in). Cross-sectional area: 1,344.6 mm². Moment of inertia Ix = 1,284.47 cm⁴, Iy = 124.23 cm⁴.
Cross-section (not to scale)
Gauge equivalent: 3.05 mm ≈ 11 gauge (Manufacturers Standard Gage)
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth (h) | 250 mm | 9.84 in |
| Width (b) | 100 mm | 3.94 in |
| Thickness (t) | 3.0 mm | 0.12 in |
| Weight | 10.5 kg/m | 7.06 lb/ft |
Section Properties
| Property | Metric | Imperial |
|---|---|---|
| Area (A) | 1,344.6 mm² | 2.084 in² |
| Moment of inertia (Ix) | 1,284.47 cm⁴ | 30.86 in⁴ |
| Moment of inertia (Iy) | 124.23 cm⁴ | 2.98 in⁴ |
| Elastic section modulus (Sx) | 102.76 cm³ | 6.271 in³ |
| Elastic section modulus (Sy) | 15.79 cm³ | 0.964 in³ |
| Plastic section modulus (Zx) | 118.17 cm³ | 7.211 in³ |
| Plastic section modulus (Zy) | 18.95 cm³ | 1.156 in³ |
| Radius of gyration (rx) | 9.77 cm | 3.846 in |
| Radius of gyration (ry) | 3.04 cm | 1.197 in |
Beam Calculator— U 250x100x3.05
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mfixed @ 0mfixed @ 6m→kN/m
Results — U 250x100x3.05
Mmax
15.0 kN·m
Vmax
15.0 kN
δmax
6.57 mm
L/913
R115.0 kN| 15.0 kN·mR215.0 kN| -15.0 kN·m
Standard:
