CHS 219.1x4.78 CISC · Weight & Dimensions

CISC, 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 219.1x4.78 steel profile weighs 25.3 kg/m (16.97 lb/ft). Cross-sectional area: 3,218.403 mm². Moment of inertia Ix = 1,848.808 cm⁴, Iy = 1,848.808 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 4.78 mm ≈ 7 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	4.8 mm	0.19 in
Diameter (d)	219.1 mm	8.63 in
Weight	25.3 kg/m	16.97 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	3,218.4 mm²	4.989 in²
Moment of inertia (Ix)	1,848.81 cm⁴	44.42 in⁴
Moment of inertia (Iy)	1,848.81 cm⁴	44.42 in⁴
Elastic section modulus (Sx)	168.76 cm³	10.299 in³
Elastic section modulus (Sy)	168.76 cm³	10.299 in³
Plastic section modulus (Zx)	219.6 cm³	13.401 in³
Plastic section modulus (Zy)	219.6 cm³	13.401 in³
Radius of gyration (rx)	7.58 cm	2.984 in
Radius of gyration (ry)	7.58 cm	2.984 in