Steel Section Catalog
U 300x100x3.05
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 300x100x3.05 (UK / Australia)
The U 300x100x3.05 steel profile weighs 11.7 kg/m (7.86 lb/ft), has a depth of 300 mm (11.81 in), flange width 100 mm (3.94 in). Cross-sectional area: 1,497.1 mm². Moment of inertia Ix = 1,969.3 cm⁴, Iy = 130.46 cm⁴.
Cross-section (not to scale)
Gauge equivalent: 3.05 mm ≈ 11 gauge (Manufacturers Standard Gage)
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth (h) | 300 mm | 11.81 in |
| Width (b) | 100 mm | 3.94 in |
| Thickness (t) | 3.0 mm | 0.12 in |
| Weight | 11.7 kg/m | 7.86 lb/ft |
Section Properties
| Property | Metric | Imperial |
|---|---|---|
| Area (A) | 1,497.1 mm² | 2.321 in² |
| Moment of inertia (Ix) | 1,969.3 cm⁴ | 47.31 in⁴ |
| Moment of inertia (Iy) | 130.46 cm⁴ | 3.13 in⁴ |
| Elastic section modulus (Sx) | 131.29 cm³ | 8.012 in³ |
| Elastic section modulus (Sy) | 16.14 cm³ | 0.985 in³ |
| Plastic section modulus (Zx) | 150.98 cm³ | 9.213 in³ |
| Plastic section modulus (Zy) | 19.36 cm³ | 1.181 in³ |
| Radius of gyration (rx) | 11.47 cm | 4.516 in |
| Radius of gyration (ry) | 2.95 cm | 1.161 in |
Beam Calculator— U 300x100x3.05
3D preview unavailable
Your device does not support WebGL. The 2D diagram below is still fully functional.
mfixed @ 0mfixed @ 6m→kN/m
Results — U 300x100x3.05
Mmax
15.0 kN·m
Vmax
15.0 kN
δmax
4.28 mm
L/1400
R115.0 kN| 15.0 kN·mR215.0 kN| -15.0 kN·m
Standard:
