RHS 140x80x3 · Weight & Dimensions

BR — 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 140x80 cal 11 (México) · Caño estructural 140x80 (Argentina)

The RHS 140x80x3 steel profile weighs 9.8 kg/m (6.57 lb/ft), has a depth of 140 mm (5.51 in), flange width 80 mm (3.15 in). Cross-sectional area: 1,284 mm². Moment of inertia Ix = 345.57 cm⁴, Iy = 144.83 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 3 mm ≈ 11 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	140 mm	5.51 in
Width (b)	80 mm	3.15 in
Thickness (t)	3 mm	0.12 in
Fillet radius (r)	6 mm	0.24 in
Weight	9.8 kg/m	6.57 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,284 mm²	1.990 in²
Moment of inertia (Ix)	345.57 cm⁴	8.30 in⁴
Moment of inertia (Iy)	144.83 cm⁴	3.48 in⁴
Elastic section modulus (Sx)	49.37 cm³	3.013 in³
Elastic section modulus (Sy)	36.21 cm³	2.210 in³
Plastic section modulus (Zx)	59.81 cm³	3.650 in³
Plastic section modulus (Zy)	40.55 cm³	2.475 in³
Radius of gyration (rx)	5.19 cm	2.043 in
Radius of gyration (ry)	3.36 cm	1.323 in