RHS 100x70x5.2 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 100x70 (México) · Caño estructural 100x70 (Argentina)

The RHS 100x70x5.2 steel profile weighs 12.5 kg/m (8.39 lb/ft), has a depth of 100 mm (3.94 in), flange width 70 mm (2.76 in). Cross-sectional area: 1,590.206 mm². Moment of inertia Ix = 209.352 cm⁴, Iy = 119.714 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 5.2 mm ≈ 6 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	100 mm	3.94 in
Width (b)	70 mm	2.76 in
Thickness (t)	5.2 mm	0.20 in
Fillet radius (r)	10.4 mm	0.41 in
Weight	12.5 kg/m	8.39 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,590.21 mm²	2.465 in²
Moment of inertia (Ix)	209.35 cm⁴	5.03 in⁴
Moment of inertia (Iy)	119.71 cm⁴	2.88 in⁴
Elastic section modulus (Sx)	41.87 cm³	2.555 in³
Elastic section modulus (Sy)	34.2 cm³	2.087 in³
Plastic section modulus (Zx)	51.97 cm³	3.171 in³
Plastic section modulus (Zy)	40.56 cm³	2.475 in³
Radius of gyration (rx)	3.63 cm	1.428 in
Radius of gyration (ry)	2.74 cm	1.080 in