CHS 356x19 AHMSA · Weight & Dimensions

AHMSA, 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 356x19 steel profile weighs 157.9 kg/m (106.12 lb/ft). Cross-sectional area: 20,115.618 mm². Moment of inertia Ix = 28,647.154 cm⁴, Iy = 28,647.154 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	19 mm	0.75 in
Diameter (d)	356 mm	14.02 in
Weight	157.9 kg/m	106.12 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	20,115.62 mm²	31.179 in²
Moment of inertia (Ix)	28,647.15 cm⁴	688.25 in⁴
Moment of inertia (Iy)	28,647.15 cm⁴	688.25 in⁴
Elastic section modulus (Sx)	1,609.39 cm³	98.211 in³
Elastic section modulus (Sy)	1,609.39 cm³	98.211 in³
Plastic section modulus (Zx)	2,160.1 cm³	131.818 in³
Plastic section modulus (Zy)	2,160.1 cm³	131.818 in³
Radius of gyration (rx)	11.93 cm	4.698 in
Radius of gyration (ry)	11.93 cm	4.698 in