RHS 110x70x6.4 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 110x70 cal 3 (México) · Caño estructural 110x70 (Argentina)

The RHS 110x70x6.4 steel profile weighs 16.0 kg/m (10.73 lb/ft), has a depth of 110 mm (4.33 in), flange width 70 mm (2.76 in). Cross-sectional area: 2,034.679 mm². Moment of inertia Ix = 308.191 cm⁴, Iy = 150.817 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 6.4 mm ≈ 3 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	110 mm	4.33 in
Width (b)	70 mm	2.76 in
Thickness (t)	6.4 mm	0.25 in
Fillet radius (r)	12.8 mm	0.50 in
Weight	16.0 kg/m	10.73 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	2,034.68 mm²	3.154 in²
Moment of inertia (Ix)	308.19 cm⁴	7.40 in⁴
Moment of inertia (Iy)	150.82 cm⁴	3.62 in⁴
Elastic section modulus (Sx)	56.03 cm³	3.419 in³
Elastic section modulus (Sy)	43.09 cm³	2.630 in³
Plastic section modulus (Zx)	70.97 cm³	4.331 in³
Plastic section modulus (Zy)	51.68 cm³	3.154 in³
Radius of gyration (rx)	3.89 cm	1.532 in
Radius of gyration (ry)	2.72 cm	1.072 in