CHS 355.6x19.1 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 355.6x19.1 steel profile weighs 158.5 kg/m (106.51 lb/ft). Cross-sectional area: 20,191.487 mm². Moment of inertia Ix = 28,671.17 cm⁴, Iy = 28,671.17 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	19.1 mm	0.75 in
Diameter (d)	355.6 mm	14.00 in
Weight	158.5 kg/m	106.51 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	20,191.49 mm²	31.297 in²
Moment of inertia (Ix)	28,671.17 cm⁴	688.82 in⁴
Moment of inertia (Iy)	28,671.17 cm⁴	688.82 in⁴
Elastic section modulus (Sx)	1,612.55 cm³	98.404 in³
Elastic section modulus (Sy)	1,612.55 cm³	98.404 in³
Plastic section modulus (Zx)	2,165.06 cm³	132.121 in³
Plastic section modulus (Zy)	2,165.06 cm³	132.121 in³
Radius of gyration (rx)	11.92 cm	4.691 in
Radius of gyration (ry)	11.92 cm	4.691 in