CHS 355.6x12.7 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 355.6x12.7 steel profile weighs 107.4 kg/m (72.17 lb/ft). Cross-sectional area: 13,681.102 mm². Moment of inertia Ix = 20,135.452 cm⁴, Iy = 20,135.452 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	12.7 mm	0.50 in
Diameter (d)	355.6 mm	14.00 in
Weight	107.4 kg/m	72.17 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	13,681.1 mm²	21.206 in²
Moment of inertia (Ix)	20,135.45 cm⁴	483.75 in⁴
Moment of inertia (Iy)	20,135.45 cm⁴	483.75 in⁴
Elastic section modulus (Sx)	1,132.48 cm³	69.108 in³
Elastic section modulus (Sy)	1,132.48 cm³	69.108 in³
Plastic section modulus (Zx)	1,493.95 cm³	91.167 in³
Plastic section modulus (Zy)	1,493.95 cm³	91.167 in³
Radius of gyration (rx)	12.13 cm	4.776 in
Radius of gyration (ry)	12.13 cm	4.776 in