Steel Section Catalog
U 290x80x4.25
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 290x80x4.25 steel profile weighs 22.0 kg/m (14.80 lb/ft), has a depth of 290 mm (11.42 in), flange width 80 mm (3.15 in). Cross-sectional area: 1,858.3 mm². Moment of inertia Ix = 2,140.81 cm⁴, Iy = 91.33 cm⁴.
Cross-section (not to scale)
Gauge equivalent: 4.25 mm ≈ 8 gauge (Manufacturers Standard Gage)
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth (h) | 290 mm | 11.42 in |
| Width (b) | 80 mm | 3.15 in |
| Thickness (t) | 4.3 mm | 0.17 in |
| Weight | 22.0 kg/m | 14.80 lb/ft |
Section Properties
| Property | Metric | Imperial |
|---|---|---|
| Area (A) | 1,858.3 mm² | 2.880 in² |
| Moment of inertia (Ix) | 2,140.81 cm⁴ | 51.43 in⁴ |
| Moment of inertia (Iy) | 91.33 cm⁴ | 2.19 in⁴ |
| Elastic section modulus (Sx) | 147.64 cm³ | 9.010 in³ |
| Elastic section modulus (Sy) | 13.66 cm³ | 0.834 in³ |
| Plastic section modulus (Zx) | 169.79 cm³ | 10.361 in³ |
| Plastic section modulus (Zy) | 16.39 cm³ | 1.000 in³ |
| Radius of gyration (rx) | 10.73 cm | 4.224 in |
| Radius of gyration (ry) | 2.22 cm | 0.874 in |
Beam Calculator— U 290x80x4.25
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mfixed @ 0mfixed @ 6m→kN/m
Results — U 290x80x4.25
Mmax
15.0 kN·m
Vmax
15.0 kN
δmax
3.94 mm
L/1522
R115.0 kN| 15.0 kN·mR215.0 kN| -15.0 kN·m
Standard:
