RHS 120x80x8.2 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 120x80 (México) · Caño estructural 120x80 (Argentina)

The RHS 120x80x8.2 steel profile weighs 22.3 kg/m (14.97 lb/ft), has a depth of 120 mm (4.72 in), flange width 80 mm (3.15 in). Cross-sectional area: 2,837.882 mm². Moment of inertia Ix = 503.605 cm⁴, Iy = 264.394 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	120 mm	4.72 in
Width (b)	80 mm	3.15 in
Thickness (t)	8.2 mm	0.32 in
Fillet radius (r)	16.4 mm	0.65 in
Weight	22.3 kg/m	14.97 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	2,837.88 mm²	4.399 in²
Moment of inertia (Ix)	503.6 cm⁴	12.10 in⁴
Moment of inertia (Iy)	264.39 cm⁴	6.35 in⁴
Elastic section modulus (Sx)	83.93 cm³	5.122 in³
Elastic section modulus (Sy)	66.1 cm³	4.034 in³
Plastic section modulus (Zx)	107.22 cm³	6.543 in³
Plastic section modulus (Zy)	80.58 cm³	4.917 in³
Radius of gyration (rx)	4.21 cm	1.658 in
Radius of gyration (ry)	3.05 cm	1.202 in