RHS 100x70x8.2 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 100x70x8.2 steel profile weighs 18.4 kg/m (12.38 lb/ft), has a depth of 100 mm (3.94 in), flange width 70 mm (2.76 in). Cross-sectional area: 2,345.882 mm². Moment of inertia Ix = 281.801 cm⁴, Iy = 159.275 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)	8.2 mm	0.32 in
Fillet radius (r)	16.4 mm	0.65 in
Weight	18.4 kg/m	12.38 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	2,345.88 mm²	3.636 in²
Moment of inertia (Ix)	281.8 cm⁴	6.77 in⁴
Moment of inertia (Iy)	159.27 cm⁴	3.83 in⁴
Elastic section modulus (Sx)	56.36 cm³	3.439 in³
Elastic section modulus (Sy)	45.51 cm³	2.777 in³
Plastic section modulus (Zx)	72.96 cm³	4.452 in³
Plastic section modulus (Zy)	56.66 cm³	3.458 in³
Radius of gyration (rx)	3.47 cm	1.365 in
Radius of gyration (ry)	2.61 cm	1.026 in