RHS 80x50x8.8 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 80x50 (México) · Caño estructural 80x50 (Argentina)

The RHS 80x50x8.8 steel profile weighs 14.0 kg/m (9.38 lb/ft), has a depth of 80 mm (3.15 in), flange width 50 mm (1.97 in). Cross-sectional area: 1,778.815 mm². Moment of inertia Ix = 118.549 cm⁴, Iy = 54.919 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	80 mm	3.15 in
Width (b)	50 mm	1.97 in
Thickness (t)	8.8 mm	0.35 in
Fillet radius (r)	17.6 mm	0.69 in
Weight	14.0 kg/m	9.38 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,778.81 mm²	2.757 in²
Moment of inertia (Ix)	118.55 cm⁴	2.85 in⁴
Moment of inertia (Iy)	54.92 cm⁴	1.32 in⁴
Elastic section modulus (Sx)	29.64 cm³	1.809 in³
Elastic section modulus (Sy)	21.97 cm³	1.341 in³
Plastic section modulus (Zx)	40.81 cm³	2.491 in³
Plastic section modulus (Zy)	28.97 cm³	1.768 in³
Radius of gyration (rx)	2.58 cm	1.016 in
Radius of gyration (ry)	1.76 cm	0.692 in