RHS 140x90x8.8 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 140x90 (México) · Caño estructural 140x90 (Argentina)

The RHS 140x90x8.8 steel profile weighs 27.8 kg/m (18.67 lb/ft), has a depth of 140 mm (5.51 in), flange width 90 mm (3.54 in). Cross-sectional area: 3,538.815 mm². Moment of inertia Ix = 858.612 cm⁴, Iy = 426.078 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	140 mm	5.51 in
Width (b)	90 mm	3.54 in
Thickness (t)	8.8 mm	0.35 in
Fillet radius (r)	17.6 mm	0.69 in
Weight	27.8 kg/m	18.67 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	3,538.81 mm²	5.485 in²
Moment of inertia (Ix)	858.61 cm⁴	20.63 in⁴
Moment of inertia (Iy)	426.08 cm⁴	10.24 in⁴
Elastic section modulus (Sx)	122.66 cm³	7.485 in³
Elastic section modulus (Sy)	94.68 cm³	5.778 in³
Plastic section modulus (Zx)	156.2 cm³	9.532 in³
Plastic section modulus (Zy)	114.46 cm³	6.985 in³
Radius of gyration (rx)	4.93 cm	1.939 in
Radius of gyration (ry)	3.47 cm	1.366 in