CHS 70x11 GOST · Weight & Dimensions

GOST, 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 70x11 steel profile weighs 16.0 kg/m (10.76 lb/ft). Cross-sectional area: 2,038.894 mm². Moment of inertia Ix = 91.801 cm⁴, Iy = 91.801 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	11 mm	0.43 in
Diameter (d)	70 mm	2.76 in
Weight	16.0 kg/m	10.76 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	2,038.89 mm²	3.160 in²
Moment of inertia (Ix)	91.8 cm⁴	2.21 in⁴
Moment of inertia (Iy)	91.8 cm⁴	2.21 in⁴
Elastic section modulus (Sx)	26.23 cm³	1.601 in³
Elastic section modulus (Sy)	26.23 cm³	1.601 in³
Plastic section modulus (Zx)	38.73 cm³	2.364 in³
Plastic section modulus (Zy)	38.73 cm³	2.364 in³
Radius of gyration (rx)	2.12 cm	0.835 in
Radius of gyration (ry)	2.12 cm	0.835 in