RHS 120x80x10.3 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 120x80x10.3 steel profile weighs 26.9 kg/m (18.06 lb/ft), has a depth of 120 mm (4.72 in), flange width 80 mm (3.15 in). Cross-sectional area: 3,422.435 mm². Moment of inertia Ix = 574.012 cm⁴, Iy = 299.076 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)	10.3 mm	0.41 in
Fillet radius (r)	20.6 mm	0.81 in
Weight	26.9 kg/m	18.06 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	3,422.43 mm²	5.305 in²
Moment of inertia (Ix)	574.01 cm⁴	13.79 in⁴
Moment of inertia (Iy)	299.08 cm⁴	7.19 in⁴
Elastic section modulus (Sx)	95.67 cm³	5.838 in³
Elastic section modulus (Sy)	74.77 cm³	4.563 in³
Plastic section modulus (Zx)	125.41 cm³	7.653 in³
Plastic section modulus (Zy)	93.92 cm³	5.731 in³
Radius of gyration (rx)	4.1 cm	1.612 in
Radius of gyration (ry)	2.96 cm	1.164 in