RHS 140x90x4.8 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 cal 6 (México) · Caño estructural 140x90 (Argentina)

The RHS 140x90x4.8 steel profile weighs 16.1 kg/m (10.85 lb/ft), has a depth of 140 mm (5.51 in), flange width 90 mm (3.54 in). Cross-sectional area: 2,056.507 mm². Moment of inertia Ix = 544.064 cm⁴, Iy = 274.214 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 4.8 mm ≈ 7 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	140 mm	5.51 in
Width (b)	90 mm	3.54 in
Thickness (t)	4.8 mm	0.19 in
Fillet radius (r)	9.6 mm	0.38 in
Weight	16.1 kg/m	10.85 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	2,056.51 mm²	3.188 in²
Moment of inertia (Ix)	544.06 cm⁴	13.07 in⁴
Moment of inertia (Iy)	274.21 cm⁴	6.59 in⁴
Elastic section modulus (Sx)	77.72 cm³	4.743 in³
Elastic section modulus (Sy)	60.94 cm³	3.719 in³
Plastic section modulus (Zx)	95.12 cm³	5.804 in³
Plastic section modulus (Zy)	70.15 cm³	4.281 in³
Radius of gyration (rx)	5.14 cm	2.025 in
Radius of gyration (ry)	3.65 cm	1.438 in