RHS 320x220x8.2 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 320x220x8.2 steel profile weighs 66.0 kg/m (44.39 lb/ft), has a depth of 320 mm (12.60 in), flange width 220 mm (8.66 in). Cross-sectional area: 8,413.882 mm². Moment of inertia Ix = 12,160.955 cm⁴, Iy = 6,838.329 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)	8.2 mm	0.32 in
Fillet radius (r)	16.4 mm	0.65 in
Weight	66.0 kg/m	44.39 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	8,413.88 mm²	13.042 in²
Moment of inertia (Ix)	12,160.96 cm⁴	292.17 in⁴
Moment of inertia (Iy)	6,838.33 cm⁴	164.29 in⁴
Elastic section modulus (Sx)	760.06 cm³	46.382 in³
Elastic section modulus (Sy)	621.67 cm³	37.937 in³
Plastic section modulus (Zx)	912.96 cm³	55.712 in³
Plastic section modulus (Zy)	706.94 cm³	43.140 in³
Radius of gyration (rx)	12.02 cm	4.733 in
Radius of gyration (ry)	9.02 cm	3.549 in