RHS 300x180x11.1 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 300x180 (México) · Caño estructural 300x180 (Argentina)

The RHS 300x180x11.1 steel profile weighs 77.3 kg/m (51.94 lb/ft), has a depth of 300 mm (11.81 in), flange width 180 mm (7.09 in). Cross-sectional area: 9,845.867 mm². Moment of inertia Ix = 11,614.383 cm⁴, Iy = 5,238.674 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	300 mm	11.81 in
Width (b)	180 mm	7.09 in
Thickness (t)	11.1 mm	0.44 in
Fillet radius (r)	22.2 mm	0.87 in
Weight	77.3 kg/m	51.94 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	9,845.87 mm²	15.261 in²
Moment of inertia (Ix)	11,614.38 cm⁴	279.04 in⁴
Moment of inertia (Iy)	5,238.67 cm⁴	125.86 in⁴
Elastic section modulus (Sx)	774.29 cm³	47.250 in³
Elastic section modulus (Sy)	582.07 cm³	35.521 in³
Plastic section modulus (Zx)	958.6 cm³	58.498 in³
Plastic section modulus (Zy)	672.74 cm³	41.053 in³
Radius of gyration (rx)	10.86 cm	4.276 in
Radius of gyration (ry)	7.29 cm	2.872 in