C 275x100x20x4.5 SAISC · Weight & Dimensions

SAISC, 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 11 pulgadas (México) · PFC 275x100x20x4.5 (UK / Australia)

The C 275x100x20x4.5 steel profile weighs 17.0 kg/m (11.44 lb/ft), has a depth of 275 mm (10.83 in), flange width 100 mm (3.94 in). Cross-sectional area: 2,184.275 mm². Moment of inertia Ix = 2,473.038 cm⁴, Iy = 250.312 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	275 mm	10.83 in
Width (b)	100 mm	3.94 in
Thickness (t)	4.5 mm	0.18 in
Lip	20 mm	0.79 in
Weight	17.0 kg/m	11.44 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	2,184.28 mm²	3.386 in²
Moment of inertia (Ix)	2,473.04 cm⁴	59.41 in⁴
Moment of inertia (Iy)	250.31 cm⁴	6.01 in⁴
Elastic section modulus (Sx)	179.86 cm³	10.976 in³
Elastic section modulus (Sy)	34.23 cm³	2.089 in³
Plastic section modulus (Zx)	218.75 cm³	13.349 in³
Plastic section modulus (Zy)	48.72 cm³	2.973 in³
Radius of gyration (rx)	10.64 cm	4.189 in
Radius of gyration (ry)	3.39 cm	1.333 in