C 170x55x20x2.5 Dabarca · Weight & Dimensions

Dabarca, cold-formed sections · 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.

Also known as: Montén de 7 pulgadas (México) · PFC 170x55x20x2.5 (UK / Australia)

The C 170x55x20x2.5 steel profile weighs 6.0 kg/m (4.01 lb/ft), has a depth of 170 mm (6.69 in), flange width 55 mm (2.17 in). Cross-sectional area: 758.881 mm². Moment of inertia Ix = 322.697 cm⁴, Iy = 30.616 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	170 mm	6.69 in
Width (b)	55 mm	2.17 in
Thickness (t)	2.5 mm	0.10 in
Lip	20 mm	0.79 in
Fillet radius (r)	2.5 mm	0.10 in
Weight	6.0 kg/m	4.01 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	758.88 mm²	1.176 in²
Moment of inertia (Ix)	322.7 cm⁴	7.75 in⁴
Moment of inertia (Iy)	30.62 cm⁴	0.74 in⁴
Elastic section modulus (Sx)	37.96 cm³	2.317 in³
Elastic section modulus (Sy)	7.9 cm³	0.482 in³
Plastic section modulus (Zx)	46.49 cm³	2.837 in³
Plastic section modulus (Zy)	11.09 cm³	0.677 in³
Radius of gyration (rx)	6.52 cm	2.567 in
Radius of gyration (ry)	2.01 cm	0.791 in