RHS 70x30x2 · 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 70x30 cal 15 (México) · Caño estructural 70x30 (Argentina)

The RHS 70x30x2 steel profile weighs 2.9 kg/m (1.93 lb/ft), has a depth of 70 mm (2.76 in), flange width 30 mm (1.18 in). Cross-sectional area: 384 mm². Moment of inertia Ix = 23.46 cm⁴, Iy = 6.08 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 2 mm ≈ 14 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	70 mm	2.76 in
Width (b)	30 mm	1.18 in
Thickness (t)	2 mm	0.08 in
Fillet radius (r)	4 mm	0.16 in
Weight	2.9 kg/m	1.93 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	384 mm²	0.595 in²
Moment of inertia (Ix)	23.46 cm⁴	0.56 in⁴
Moment of inertia (Iy)	6.08 cm⁴	0.15 in⁴
Elastic section modulus (Sx)	6.7 cm³	0.409 in³
Elastic section modulus (Sy)	4.06 cm³	0.248 in³
Plastic section modulus (Zx)	8.44 cm³	0.515 in³
Plastic section modulus (Zy)	4.6 cm³	0.281 in³
Radius of gyration (rx)	2.47 cm	0.972 in
Radius of gyration (ry)	1.26 cm	0.496 in