RHS 180x110x8.8 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 180x110 (México) · Caño estructural 180x110 (Argentina)

The RHS 180x110x8.8 steel profile weighs 36.1 kg/m (24.24 lb/ft), has a depth of 180 mm (7.09 in), flange width 110 mm (4.33 in). Cross-sectional area: 4,594.815 mm². Moment of inertia Ix = 1,892.502 cm⁴, Iy = 872.259 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	180 mm	7.09 in
Width (b)	110 mm	4.33 in
Thickness (t)	8.8 mm	0.35 in
Fillet radius (r)	17.6 mm	0.69 in
Weight	36.1 kg/m	24.24 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	4,594.81 mm²	7.122 in²
Moment of inertia (Ix)	1,892.5 cm⁴	45.47 in⁴
Moment of inertia (Iy)	872.26 cm⁴	20.96 in⁴
Elastic section modulus (Sx)	210.28 cm³	12.832 in³
Elastic section modulus (Sy)	158.59 cm³	9.678 in³
Plastic section modulus (Zx)	264.15 cm³	16.119 in³
Plastic section modulus (Zy)	187.23 cm³	11.425 in³
Radius of gyration (rx)	6.42 cm	2.527 in
Radius of gyration (ry)	4.36 cm	1.715 in