CHS 273x7.9 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 273x7.9 steel profile weighs 51.6 kg/m (34.71 lb/ft). Cross-sectional area: 6,579.406 mm². Moment of inertia Ix = 5,784.977 cm⁴, Iy = 5,784.977 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	7.9 mm	0.31 in
Diameter (d)	273 mm	10.75 in
Weight	51.6 kg/m	34.71 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	6,579.41 mm²	10.198 in²
Moment of inertia (Ix)	5,784.98 cm⁴	138.98 in⁴
Moment of inertia (Iy)	5,784.98 cm⁴	138.98 in⁴
Elastic section modulus (Sx)	423.81 cm³	25.862 in³
Elastic section modulus (Sy)	423.81 cm³	25.862 in³
Plastic section modulus (Zx)	555.36 cm³	33.890 in³
Plastic section modulus (Zy)	555.36 cm³	33.890 in³
Radius of gyration (rx)	9.38 cm	3.692 in
Radius of gyration (ry)	9.38 cm	3.692 in