RHS 320x220x11.1 Açotubo · Weight & Dimensions

Açotubo, cold-formed sections · Rectangular Hollow Section

Rectangular Hollow Sections (RHS) are tubular profiles with excellent torsional resistance and aesthetic appeal. Used for columns, trusses, and exposed structural elements.

Also known as: PTR 320x220 (México) · Caño estructural 320x220 (Argentina)

The RHS 320x220x11.1 steel profile weighs 87.8 kg/m (58.97 lb/ft), has a depth of 320 mm (12.60 in), flange width 220 mm (8.66 in). Cross-sectional area: 11,177.867 mm². Moment of inertia Ix = 15,750.739 cm⁴, Iy = 8,820.167 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	320 mm	12.60 in
Width (b)	220 mm	8.66 in
Thickness (t)	11.1 mm	0.44 in
Fillet radius (r)	22.2 mm	0.87 in
Weight	87.8 kg/m	58.97 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	11,177.87 mm²	17.326 in²
Moment of inertia (Ix)	15,750.74 cm⁴	378.41 in⁴
Moment of inertia (Iy)	8,820.17 cm⁴	211.90 in⁴
Elastic section modulus (Sx)	984.42 cm³	60.073 in³
Elastic section modulus (Sy)	801.83 cm³	48.931 in³
Plastic section modulus (Zx)	1,196.43 cm³	73.011 in³
Plastic section modulus (Zy)	924.92 cm³	56.442 in³
Radius of gyration (rx)	11.87 cm	4.673 in
Radius of gyration (ry)	8.88 cm	3.497 in