RHS 70x60x3.9 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 70x60 cal 8 (México) · Caño estructural 70x60 (Argentina)

The RHS 70x60x3.9 steel profile weighs 7.2 kg/m (4.82 lb/ft), has a depth of 70 mm (2.76 in), flange width 60 mm (2.36 in). Cross-sectional area: 913.991 mm². Moment of inertia Ix = 62.227 cm⁴, Iy = 48.924 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 3.9 mm ≈ 9 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	70 mm	2.76 in
Width (b)	60 mm	2.36 in
Thickness (t)	3.9 mm	0.15 in
Fillet radius (r)	7.8 mm	0.31 in
Weight	7.2 kg/m	4.82 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	913.99 mm²	1.417 in²
Moment of inertia (Ix)	62.23 cm⁴	1.50 in⁴
Moment of inertia (Iy)	48.92 cm⁴	1.18 in⁴
Elastic section modulus (Sx)	17.78 cm³	1.085 in³
Elastic section modulus (Sy)	16.31 cm³	0.995 in³
Plastic section modulus (Zx)	21.67 cm³	1.322 in³
Plastic section modulus (Zy)	19.48 cm³	1.189 in³
Radius of gyration (rx)	2.61 cm	1.027 in
Radius of gyration (ry)	2.31 cm	0.911 in