Steel Section Catalog
U 250x100x3.75
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 250x100x3.75 (UK / Australia)
The U 250x100x3.75 steel profile weighs 12.8 kg/m (8.62 lb/ft), has a depth of 250 mm (9.84 in), flange width 100 mm (3.94 in). Cross-sectional area: 1,645.3 mm². Moment of inertia Ix = 1,561.07 cm⁴, Iy = 149.67 cm⁴.
Cross-section (not to scale)
Gauge equivalent: 3.75 mm ≈ 9 gauge (Manufacturers Standard Gage)
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth (h) | 250 mm | 9.84 in |
| Width (b) | 100 mm | 3.94 in |
| Thickness (t) | 3.8 mm | 0.15 in |
| Weight | 12.8 kg/m | 8.62 lb/ft |
Section Properties
| Property | Metric | Imperial |
|---|---|---|
| Area (A) | 1,645.3 mm² | 2.550 in² |
| Moment of inertia (Ix) | 1,561.07 cm⁴ | 37.50 in⁴ |
| Moment of inertia (Iy) | 149.67 cm⁴ | 3.60 in⁴ |
| Elastic section modulus (Sx) | 124.89 cm³ | 7.621 in³ |
| Elastic section modulus (Sy) | 18.97 cm³ | 1.158 in³ |
| Plastic section modulus (Zx) | 143.62 cm³ | 8.764 in³ |
| Plastic section modulus (Zy) | 22.77 cm³ | 1.390 in³ |
| Radius of gyration (rx) | 9.74 cm | 3.835 in |
| Radius of gyration (ry) | 3.02 cm | 1.189 in |
Beam Calculator— U 250x100x3.75
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mfixed @ 0mfixed @ 6m→kN/m
Results — U 250x100x3.75
Mmax
15.0 kN·m
Vmax
15.0 kN
δmax
5.40 mm
L/1110
R115.0 kN| 15.0 kN·mR215.0 kN| -15.0 kN·m
Standard:
