CHS 323.8x19.1 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 323.8x19.1 steel profile weighs 143.5 kg/m (96.45 lb/ft). Cross-sectional area: 18,283.347 mm². Moment of inertia Ix = 21,301.676 cm⁴, Iy = 21,301.676 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	19.1 mm	0.75 in
Diameter (d)	323.8 mm	12.75 in
Weight	143.5 kg/m	96.45 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	18,283.35 mm²	28.339 in²
Moment of inertia (Ix)	21,301.68 cm⁴	511.77 in⁴
Moment of inertia (Iy)	21,301.68 cm⁴	511.77 in⁴
Elastic section modulus (Sx)	1,315.73 cm³	80.291 in³
Elastic section modulus (Sy)	1,315.73 cm³	80.291 in³
Plastic section modulus (Zx)	1,775.61 cm³	108.355 in³
Plastic section modulus (Zy)	1,775.61 cm³	108.355 in³
Radius of gyration (rx)	10.79 cm	4.250 in
Radius of gyration (ry)	10.79 cm	4.250 in