C 177.8x69.9x20.3x3.42 IMCA · Weight & Dimensions

IMCA, 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 177.8x69.9x20.3x3.42 (UK / Australia)

The C 177.8x69.9x20.3x3.42 steel profile weighs 8.9 kg/m (6.01 lb/ft), has a depth of 177.8 mm (7.00 in), flange width 69.9 mm (2.75 in). Cross-sectional area: 1,139.979 mm². Moment of inertia Ix = 544.551 cm⁴, Iy = 70.917 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	177.8 mm	7.00 in
Width (b)	69.9 mm	2.75 in
Thickness (t)	3.4 mm	0.13 in
Lip	20.3 mm	0.80 in
Fillet radius (r)	4.8 mm	0.19 in
Weight	8.9 kg/m	6.01 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,139.98 mm²	1.767 in²
Moment of inertia (Ix)	544.55 cm⁴	13.08 in⁴
Moment of inertia (Iy)	70.92 cm⁴	1.70 in⁴
Elastic section modulus (Sx)	61.25 cm³	3.738 in³
Elastic section modulus (Sy)	14.58 cm³	0.890 in³
Plastic section modulus (Zx)	75.55 cm³	4.610 in³
Plastic section modulus (Zy)	21.09 cm³	1.287 in³
Radius of gyration (rx)	6.91 cm	2.721 in
Radius of gyration (ry)	2.49 cm	0.982 in