RHS 100x50x8.8 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 100x50 (México) · Caño estructural 100x50 (Argentina)

The RHS 100x50x8.8 steel profile weighs 16.7 kg/m (11.24 lb/ft), has a depth of 100 mm (3.94 in), flange width 50 mm (1.97 in). Cross-sectional area: 2,130.815 mm². Moment of inertia Ix = 219.137 cm⁴, Iy = 70.084 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	100 mm	3.94 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	16.7 kg/m	11.24 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	2,130.81 mm²	3.303 in²
Moment of inertia (Ix)	219.14 cm⁴	5.26 in⁴
Moment of inertia (Iy)	70.08 cm⁴	1.68 in⁴
Elastic section modulus (Sx)	43.83 cm³	2.675 in³
Elastic section modulus (Sy)	28.03 cm³	1.711 in³
Plastic section modulus (Zx)	60.36 cm³	3.683 in³
Plastic section modulus (Zy)	36.22 cm³	2.210 in³
Radius of gyration (rx)	3.21 cm	1.263 in
Radius of gyration (ry)	1.81 cm	0.714 in