RHS 100x70x8.8 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 (México) · Caño estructural 100x70 (Argentina)

The RHS 100x70x8.8 steel profile weighs 19.5 kg/m (13.10 lb/ft), has a depth of 100 mm (3.94 in), flange width 70 mm (2.76 in). Cross-sectional area: 2,482.815 mm². Moment of inertia Ix = 292.557 cm⁴, Iy = 165.003 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	100 mm	3.94 in
Width (b)	70 mm	2.76 in
Thickness (t)	8.8 mm	0.35 in
Fillet radius (r)	17.6 mm	0.69 in
Weight	19.5 kg/m	13.10 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	2,482.81 mm²	3.848 in²
Moment of inertia (Ix)	292.56 cm⁴	7.03 in⁴
Moment of inertia (Iy)	165 cm⁴	3.96 in⁴
Elastic section modulus (Sx)	58.51 cm³	3.571 in³
Elastic section modulus (Sy)	47.14 cm³	2.877 in³
Plastic section modulus (Zx)	76.41 cm³	4.663 in³
Plastic section modulus (Zy)	59.29 cm³	3.618 in³
Radius of gyration (rx)	3.43 cm	1.351 in
Radius of gyration (ry)	2.58 cm	1.015 in