RHS 180x120x8.8 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 180x120 (México) · Caño estructural 180x120 (Argentina)

The RHS 180x120x8.8 steel profile weighs 37.5 kg/m (25.17 lb/ft), has a depth of 180 mm (7.09 in), flange width 120 mm (4.72 in). Cross-sectional area: 4,770.815 mm². Moment of inertia Ix = 2,021.577 cm⁴, Iy = 1,071.121 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	180 mm	7.09 in
Width (b)	120 mm	4.72 in
Thickness (t)	8.8 mm	0.35 in
Fillet radius (r)	17.6 mm	0.69 in
Weight	37.5 kg/m	25.17 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	4,770.81 mm²	7.395 in²
Moment of inertia (Ix)	2,021.58 cm⁴	48.57 in⁴
Moment of inertia (Iy)	1,071.12 cm⁴	25.73 in⁴
Elastic section modulus (Sx)	224.62 cm³	13.707 in³
Elastic section modulus (Sy)	178.52 cm³	10.894 in³
Plastic section modulus (Zx)	279.21 cm³	17.039 in³
Plastic section modulus (Zy)	210.64 cm³	12.854 in³
Radius of gyration (rx)	6.51 cm	2.563 in
Radius of gyration (ry)	4.74 cm	1.865 in