CHS 323.8x15.9 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 323.8x15.9 steel profile weighs 120.7 kg/m (81.13 lb/ft). Cross-sectional area: 15,380.012 mm². Moment of inertia Ix = 18,274.381 cm⁴, Iy = 18,274.381 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	15.9 mm	0.63 in
Diameter (d)	323.8 mm	12.75 in
Weight	120.7 kg/m	81.13 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	15,380.01 mm²	23.839 in²
Moment of inertia (Ix)	18,274.38 cm⁴	439.04 in⁴
Moment of inertia (Iy)	18,274.38 cm⁴	439.04 in⁴
Elastic section modulus (Sx)	1,128.74 cm³	68.881 in³
Elastic section modulus (Sy)	1,128.74 cm³	68.881 in³
Plastic section modulus (Zx)	1,508.7 cm³	92.067 in³
Plastic section modulus (Zy)	1,508.7 cm³	92.067 in³
Radius of gyration (rx)	10.9 cm	4.291 in
Radius of gyration (ry)	10.9 cm	4.291 in