CHS 219.1x7.9 Açotubo · Weight & Dimensions

Açotubo, 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 219.1x7.9 steel profile weighs 41.1 kg/m (27.65 lb/ft). Cross-sectional area: 5,241.685 mm². Moment of inertia Ix = 2,926.685 cm⁴, Iy = 2,926.685 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	7.9 mm	0.31 in
Diameter (d)	219.1 mm	8.63 in
Weight	41.1 kg/m	27.65 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	5,241.68 mm²	8.125 in²
Moment of inertia (Ix)	2,926.68 cm⁴	70.31 in⁴
Moment of inertia (Iy)	2,926.68 cm⁴	70.31 in⁴
Elastic section modulus (Sx)	267.16 cm³	16.303 in³
Elastic section modulus (Sy)	267.16 cm³	16.303 in³
Plastic section modulus (Zx)	352.55 cm³	21.514 in³
Plastic section modulus (Zy)	352.55 cm³	21.514 in³
Radius of gyration (rx)	7.47 cm	2.942 in
Radius of gyration (ry)	7.47 cm	2.942 in