CHS 273x15.9 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 273x15.9 steel profile weighs 100.8 kg/m (67.74 lb/ft). Cross-sectional area: 12,842.485 mm². Moment of inertia Ix = 10,651.753 cm⁴, Iy = 10,651.753 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Thickness (t)	15.9 mm	0.63 in
Diameter (d)	273 mm	10.75 in
Weight	100.8 kg/m	67.74 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	12,842.49 mm²	19.906 in²
Moment of inertia (Ix)	10,651.75 cm⁴	255.91 in⁴
Moment of inertia (Iy)	10,651.75 cm⁴	255.91 in⁴
Elastic section modulus (Sx)	780.35 cm³	47.620 in³
Elastic section modulus (Sy)	780.35 cm³	47.620 in³
Plastic section modulus (Zx)	1,052.34 cm³	64.218 in³
Plastic section modulus (Zy)	1,052.34 cm³	64.218 in³
Radius of gyration (rx)	9.11 cm	3.586 in
Radius of gyration (ry)	9.11 cm	3.586 in