CHS 356x7.9 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 356x7.9 steel profile weighs 67.8 kg/m (45.58 lb/ft). Cross-sectional area: 8,639.348 mm². Moment of inertia Ix = 13,092.503 cm⁴, Iy = 13,092.503 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	7.9 mm	0.31 in
Diameter (d)	356 mm	14.02 in
Weight	67.8 kg/m	45.58 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	8,639.35 mm²	13.391 in²
Moment of inertia (Ix)	13,092.5 cm⁴	314.55 in⁴
Moment of inertia (Iy)	13,092.5 cm⁴	314.55 in⁴
Elastic section modulus (Sx)	735.53 cm³	44.885 in³
Elastic section modulus (Sy)	735.53 cm³	44.885 in³
Plastic section modulus (Zx)	957.44 cm³	58.427 in³
Plastic section modulus (Zy)	957.44 cm³	58.427 in³
Radius of gyration (rx)	12.31 cm	4.847 in
Radius of gyration (ry)	12.31 cm	4.847 in