CHS 34.1x2.5 SAISC · Weight & Dimensions

SAISC, 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 34.1x2.5 steel profile weighs 1.9 kg/m (1.31 lb/ft). Cross-sectional area: 248.186 mm². Moment of inertia Ix = 3.117 cm⁴, Iy = 3.117 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 2.5 mm ≈ 12 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Thickness (t)	2.5 mm	0.10 in
Diameter (d)	34.1 mm	1.34 in
Weight	1.9 kg/m	1.31 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	248.19 mm²	0.385 in²
Moment of inertia (Ix)	3.12 cm⁴	0.07 in⁴
Moment of inertia (Iy)	3.12 cm⁴	0.07 in⁴
Elastic section modulus (Sx)	1.83 cm³	0.112 in³
Elastic section modulus (Sy)	1.83 cm³	0.112 in³
Plastic section modulus (Zx)	2.5 cm³	0.153 in³
Plastic section modulus (Zy)	2.5 cm³	0.153 in³
Radius of gyration (rx)	1.12 cm	0.441 in
Radius of gyration (ry)	1.12 cm	0.441 in