CHS 323.8x21.4 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 323.8x21.4 steel profile weighs 159.6 kg/m (107.24 lb/ft). Cross-sectional area: 20,330.377 mm². Moment of inertia Ix = 23,355.466 cm⁴, Iy = 23,355.466 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	21.4 mm	0.84 in
Diameter (d)	323.8 mm	12.75 in
Weight	159.6 kg/m	107.24 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	20,330.38 mm²	31.512 in²
Moment of inertia (Ix)	23,355.47 cm⁴	561.12 in⁴
Moment of inertia (Iy)	23,355.47 cm⁴	561.12 in⁴
Elastic section modulus (Sx)	1,442.59 cm³	88.032 in³
Elastic section modulus (Sy)	1,442.59 cm³	88.032 in³
Plastic section modulus (Zx)	1,960.21 cm³	119.620 in³
Plastic section modulus (Zy)	1,960.21 cm³	119.620 in³
Radius of gyration (rx)	10.72 cm	4.220 in
Radius of gyration (ry)	10.72 cm	4.220 in