Steel Section Catalog
U 90x30x3.05
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 90x30x3.05 steel profile weighs 5.0 kg/m (3.38 lb/ft), has a depth of 90 mm (3.54 in), flange width 30 mm (1.18 in). Cross-sectional area: 429.6 mm². Moment of inertia Ix = 47.79 cm⁴, Iy = 2.86 cm⁴.
Cross-section (not to scale)
Gauge equivalent: 3.05 mm ≈ 11 gauge (Manufacturers Standard Gage)
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth (h) | 90 mm | 3.54 in |
| Width (b) | 30 mm | 1.18 in |
| Thickness (t) | 3.0 mm | 0.12 in |
| Weight | 5.0 kg/m | 3.38 lb/ft |
Section Properties
| Property | Metric | Imperial |
|---|---|---|
| Area (A) | 429.6 mm² | 0.666 in² |
| Moment of inertia (Ix) | 47.79 cm⁴ | 1.15 in⁴ |
| Moment of inertia (Iy) | 2.86 cm⁴ | 0.07 in⁴ |
| Elastic section modulus (Sx) | 10.62 cm³ | 0.648 in³ |
| Elastic section modulus (Sy) | 1.15 cm³ | 0.070 in³ |
| Plastic section modulus (Zx) | 12.21 cm³ | 0.745 in³ |
| Plastic section modulus (Zy) | 1.38 cm³ | 0.084 in³ |
| Radius of gyration (rx) | 3.34 cm | 1.315 in |
| Radius of gyration (ry) | 0.82 cm | 0.323 in |
Beam Calculator— U 90x30x3.05
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mfixed @ 0mfixed @ 6m→kN/m
Results — U 90x30x3.05
Mmax
15.0 kN·m
Vmax
15.0 kN
δmax
176.55 mm
L/34
R115.0 kN| 15.0 kN·mR215.0 kN| -15.0 kN·m
Standard:
