CHS 323.9x11.13 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 323.9x11.13 steel profile weighs 85.8 kg/m (57.69 lb/ft). Cross-sectional area: 10,936.293 mm². Moment of inertia Ix = 13,389.98 cm⁴, Iy = 13,389.98 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	11.1 mm	0.44 in
Diameter (d)	323.9 mm	12.75 in
Weight	85.8 kg/m	57.69 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	10,936.29 mm²	16.951 in²
Moment of inertia (Ix)	13,389.98 cm⁴	321.69 in⁴
Moment of inertia (Iy)	13,389.98 cm⁴	321.69 in⁴
Elastic section modulus (Sx)	826.8 cm³	50.454 in³
Elastic section modulus (Sy)	826.8 cm³	50.454 in³
Plastic section modulus (Zx)	1,089.25 cm³	66.471 in³
Plastic section modulus (Zy)	1,089.25 cm³	66.471 in³
Radius of gyration (rx)	11.07 cm	4.356 in
Radius of gyration (ry)	11.07 cm	4.356 in