RHS 100x70x4.8 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 cal 6 (México) · Caño estructural 100x70 (Argentina)

The RHS 100x70x4.8 steel profile weighs 11.6 kg/m (7.81 lb/ft), has a depth of 100 mm (3.94 in), flange width 70 mm (2.76 in). Cross-sectional area: 1,480.507 mm². Moment of inertia Ix = 197.199 cm⁴, Iy = 112.951 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 4.8 mm ≈ 7 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	100 mm	3.94 in
Width (b)	70 mm	2.76 in
Thickness (t)	4.8 mm	0.19 in
Fillet radius (r)	9.6 mm	0.38 in
Weight	11.6 kg/m	7.81 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,480.51 mm²	2.295 in²
Moment of inertia (Ix)	197.2 cm⁴	4.74 in⁴
Moment of inertia (Iy)	112.95 cm⁴	2.71 in⁴
Elastic section modulus (Sx)	39.44 cm³	2.407 in³
Elastic section modulus (Sy)	32.27 cm³	1.969 in³
Plastic section modulus (Zx)	48.69 cm³	2.971 in³
Plastic section modulus (Zy)	38.03 cm³	2.321 in³
Radius of gyration (rx)	3.65 cm	1.437 in
Radius of gyration (ry)	2.76 cm	1.087 in