CHS 356x27.8 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 356x27.8 steel profile weighs 225.0 kg/m (151.21 lb/ft). Cross-sectional area: 28,663.766 mm². Moment of inertia Ix = 38,870.961 cm⁴, Iy = 38,870.961 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	27.8 mm	1.09 in
Diameter (d)	356 mm	14.02 in
Weight	225.0 kg/m	151.21 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	28,663.77 mm²	44.429 in²
Moment of inertia (Ix)	38,870.96 cm⁴	933.87 in⁴
Moment of inertia (Iy)	38,870.96 cm⁴	933.87 in⁴
Elastic section modulus (Sx)	2,183.76 cm³	133.262 in³
Elastic section modulus (Sy)	2,183.76 cm³	133.262 in³
Plastic section modulus (Zx)	3,001.65 cm³	183.172 in³
Plastic section modulus (Zy)	3,001.65 cm³	183.172 in³
Radius of gyration (rx)	11.65 cm	4.585 in
Radius of gyration (ry)	11.65 cm	4.585 in