CHS 26.7x3.18 CISC · Weight & Dimensions

CISC, 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 26.7x3.18 steel profile weighs 1.8 kg/m (1.24 lb/ft). Cross-sectional area: 234.971 mm². Moment of inertia Ix = 1.654 cm⁴, Iy = 1.654 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 3.18 mm ≈ 10 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	3.2 mm	0.13 in
Diameter (d)	26.7 mm	1.05 in
Weight	1.8 kg/m	1.24 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	234.97 mm²	0.364 in²
Moment of inertia (Ix)	1.65 cm⁴	0.04 in⁴
Moment of inertia (Iy)	1.65 cm⁴	0.04 in⁴
Elastic section modulus (Sx)	1.24 cm³	0.076 in³
Elastic section modulus (Sy)	1.24 cm³	0.076 in³
Plastic section modulus (Zx)	1.77 cm³	0.108 in³
Plastic section modulus (Zy)	1.77 cm³	0.108 in³
Radius of gyration (rx)	0.84 cm	0.330 in
Radius of gyration (ry)	0.84 cm	0.330 in