CHS 273x8.7 Açotubo · Weight & Dimensions

Açotubo, 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 273x8.7 steel profile weighs 56.7 kg/m (38.11 lb/ft). Cross-sectional area: 7,223.81 mm². Moment of inertia Ix = 6,314.529 cm⁴, Iy = 6,314.529 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	8.7 mm	0.34 in
Diameter (d)	273 mm	10.75 in
Weight	56.7 kg/m	38.11 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	7,223.81 mm²	11.197 in²
Moment of inertia (Ix)	6,314.53 cm⁴	151.71 in⁴
Moment of inertia (Iy)	6,314.53 cm⁴	151.71 in⁴
Elastic section modulus (Sx)	462.6 cm³	28.230 in³
Elastic section modulus (Sy)	462.6 cm³	28.230 in³
Plastic section modulus (Zx)	607.95 cm³	37.100 in³
Plastic section modulus (Zy)	607.95 cm³	37.100 in³
Radius of gyration (rx)	9.35 cm	3.681 in
Radius of gyration (ry)	9.35 cm	3.681 in