Steel Section Catalog
U 250x70x3.05
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.
The U 250x70x3.05 steel profile weighs 13.6 kg/m (9.17 lb/ft), has a depth of 250 mm (9.84 in), flange width 70 mm (2.76 in). Cross-sectional area: 1,161.6 mm². Moment of inertia Ix = 1,005.45 cm⁴, Iy = 44.99 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) | 70 mm | 2.76 in |
| Thickness (t) | 3.0 mm | 0.12 in |
| Weight | 13.6 kg/m | 9.17 lb/ft |
Section Properties
| Property | Metric | Imperial |
|---|---|---|
| Area (A) | 1,161.6 mm² | 1.800 in² |
| Moment of inertia (Ix) | 1,005.45 cm⁴ | 24.16 in⁴ |
| Moment of inertia (Iy) | 44.99 cm⁴ | 1.08 in⁴ |
| Elastic section modulus (Sx) | 80.44 cm³ | 4.909 in³ |
| Elastic section modulus (Sy) | 7.73 cm³ | 0.472 in³ |
| Plastic section modulus (Zx) | 92.5 cm³ | 5.645 in³ |
| Plastic section modulus (Zy) | 9.27 cm³ | 0.566 in³ |
| Radius of gyration (rx) | 9.3 cm | 3.661 in |
| Radius of gyration (ry) | 1.97 cm | 0.776 in |
Beam Calculator— U 250x70x3.05
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mfixed @ 0mfixed @ 6m→kN/m
Results — U 250x70x3.05
Mmax
15.0 kN·m
Vmax
15.0 kN
δmax
8.39 mm
L/715
R115.0 kN| 15.0 kN·mR215.0 kN| -15.0 kN·m
Standard:
