CHS 101.6x3.5 SAISC · Weight & Dimensions

SAISC, cold-formed sections · Circular Hollow Section

Circular Hollow Sections (CHS) are round tubular profiles with the most efficient cross-section for compression. Used for columns, trusses, and architectural structures.

Also known as: Caño estructural redondo (Argentina)

The CHS 101.6x3.5 steel profile weighs 8.5 kg/m (5.69 lb/ft). Cross-sectional area: 1,078.666 mm². Moment of inertia Ix = 129.923 cm⁴, Iy = 129.923 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 3.5 mm ≈ 10 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	3.5 mm	0.14 in
Diameter (d)	101.6 mm	4.00 in
Weight	8.5 kg/m	5.69 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,078.67 mm²	1.672 in²
Moment of inertia (Ix)	129.92 cm⁴	3.12 in⁴
Moment of inertia (Iy)	129.92 cm⁴	3.12 in⁴
Elastic section modulus (Sx)	25.58 cm³	1.561 in³
Elastic section modulus (Sy)	25.58 cm³	1.561 in³
Plastic section modulus (Zx)	33.7 cm³	2.056 in³
Plastic section modulus (Zy)	33.7 cm³	2.056 in³
Radius of gyration (rx)	3.47 cm	1.366 in
Radius of gyration (ry)	3.47 cm	1.366 in