RHS 110x80x6.4 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 110x80 cal 3 (México) · Caño estructural 110x80 (Argentina)

The RHS 110x80x6.4 steel profile weighs 17.0 kg/m (11.41 lb/ft), has a depth of 110 mm (4.33 in), flange width 80 mm (3.15 in). Cross-sectional area: 2,162.679 mm². Moment of inertia Ix = 342.58 cm⁴, Iy = 207.689 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)	80 mm	3.15 in
Thickness (t)	6.4 mm	0.25 in
Fillet radius (r)	12.8 mm	0.50 in
Weight	17.0 kg/m	11.41 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	2,162.68 mm²	3.352 in²
Moment of inertia (Ix)	342.58 cm⁴	8.23 in⁴
Moment of inertia (Iy)	207.69 cm⁴	4.99 in⁴
Elastic section modulus (Sx)	62.29 cm³	3.801 in³
Elastic section modulus (Sy)	51.92 cm³	3.169 in³
Plastic section modulus (Zx)	77.6 cm³	4.736 in³
Plastic section modulus (Zy)	62.17 cm³	3.794 in³
Radius of gyration (rx)	3.98 cm	1.567 in
Radius of gyration (ry)	3.1 cm	1.220 in