CHS 219.1x8.7 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 219.1x8.7 steel profile weighs 45.1 kg/m (30.33 lb/ft). Cross-sectional area: 5,750.623 mm². Moment of inertia Ix = 3,187.559 cm⁴, Iy = 3,187.559 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	8.7 mm	0.34 in
Diameter (d)	219.1 mm	8.63 in
Weight	45.1 kg/m	30.33 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	5,750.62 mm²	8.913 in²
Moment of inertia (Ix)	3,187.56 cm⁴	76.58 in⁴
Moment of inertia (Iy)	3,187.56 cm⁴	76.58 in⁴
Elastic section modulus (Sx)	290.97 cm³	17.756 in³
Elastic section modulus (Sy)	290.97 cm³	17.756 in³
Plastic section modulus (Zx)	385.35 cm³	23.516 in³
Plastic section modulus (Zy)	385.35 cm³	23.516 in³
Radius of gyration (rx)	7.45 cm	2.931 in
Radius of gyration (ry)	7.45 cm	2.931 in