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 250x85x25x4.25 steel profile weighs 21.2 kg/m (14.24 lb/ft), has a depth of 250 mm (9.84 in), flange width 85 mm (3.35 in). Cross-sectional area: 1,925.3 mm². Moment of inertia Ix = 1,804.36 cm⁴, Iy = 178.26 cm⁴.
| Property | Metric | Imperial |
|---|---|---|
| Depth (h) | 250 mm | 9.84 in |
| Width (b) | 85 mm | 3.35 in |
| Thickness (t) | 4.3 mm | 0.17 in |
| Lip | 25 mm | 0.98 in |
| Weight | 21.2 kg/m | 14.24 lb/ft |
| Property | Metric | Imperial |
|---|---|---|
| Area (A) | 1,925.3 mm² | 2.984 in² |
| Moment of inertia (Ix) | 1,804.36 cm⁴ | 43.35 in⁴ |
| Moment of inertia (Iy) | 178.26 cm⁴ | 4.28 in⁴ |
| Elastic section modulus (Sx) | 144.35 cm³ | 8.809 in³ |
| Elastic section modulus (Sy) | 28.54 cm³ | 1.742 in³ |
| Plastic section modulus (Zx) | 166 cm³ | 10.130 in³ |
| Plastic section modulus (Zy) | 34.25 cm³ | 2.090 in³ |
| Radius of gyration (rx) | 9.68 cm | 3.811 in |
| Radius of gyration (ry) | 3.04 cm | 1.197 in |
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15.0 kN·m
15.0 kN
4.68 mm
L/1283