BR — Cold-formed Lipped Channel
Cold-formed lipped channels (C shapes) are lightweight profiles commonly used as purlins, girts, and light framing members. The stiffening lips increase local buckling resistance. Designed per AISI S100 and NBR 14762.
The C 250x85x25x2.25 steel profile weighs 11.2 kg/m (7.54 lb/ft), has a depth of 250 mm (9.84 in), flange width 85 mm (3.35 in). Cross-sectional area: 1,037.3 mm². Moment of inertia Ix = 991.68 cm⁴, Iy = 101.68 cm⁴.
| Property | Metric | Imperial |
|---|---|---|
| Depth (h) | 250 mm | 9.84 in |
| Width (b) | 85 mm | 3.35 in |
| Thickness (t) | 2.3 mm | 0.09 in |
| Lip | 25 mm | 0.98 in |
| Weight | 11.2 kg/m | 7.54 lb/ft |
| Property | Metric | Imperial |
|---|---|---|
| Area (A) | 1,037.3 mm² | 1.608 in² |
| Moment of inertia (Ix) | 991.68 cm⁴ | 23.83 in⁴ |
| Moment of inertia (Iy) | 101.68 cm⁴ | 2.44 in⁴ |
| Elastic section modulus (Sx) | 79.33 cm³ | 4.841 in³ |
| Elastic section modulus (Sy) | 16.51 cm³ | 1.008 in³ |
| Plastic section modulus (Zx) | 91.24 cm³ | 5.568 in³ |
| Plastic section modulus (Zy) | 19.81 cm³ | 1.209 in³ |
| Radius of gyration (rx) | 9.78 cm | 3.850 in |
| Radius of gyration (ry) | 3.13 cm | 1.232 in |
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15.0 kN·m
15.0 kN
8.51 mm
L/705