RHS 140x80x5 · 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 6 (México) · Caño estructural 140x80 (Argentina)

The RHS 140x80x5 steel profile weighs 15.8 kg/m (10.62 lb/ft), has a depth of 140 mm (5.51 in), flange width 80 mm (3.15 in). Cross-sectional area: 2,100 mm². Moment of inertia Ix = 547.75 cm⁴, Iy = 225.75 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 5 mm ≈ 6 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	140 mm	5.51 in
Width (b)	80 mm	3.15 in
Thickness (t)	5 mm	0.20 in
Fillet radius (r)	10 mm	0.39 in
Weight	15.8 kg/m	10.62 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	2,100 mm²	3.255 in²
Moment of inertia (Ix)	547.75 cm⁴	13.16 in⁴
Moment of inertia (Iy)	225.75 cm⁴	5.42 in⁴
Elastic section modulus (Sx)	78.25 cm³	4.775 in³
Elastic section modulus (Sy)	56.44 cm³	3.444 in³
Plastic section modulus (Zx)	96.25 cm³	5.874 in³
Plastic section modulus (Zy)	64.75 cm³	3.951 in³
Radius of gyration (rx)	5.11 cm	2.012 in
Radius of gyration (ry)	3.28 cm	1.291 in