RHS 350x220x8.8 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 350x220 (México) · Caño estructural 350x220 (Argentina)

The RHS 350x220x8.8 steel profile weighs 74.8 kg/m (50.23 lb/ft), has a depth of 350 mm (13.78 in), flange width 220 mm (8.66 in). Cross-sectional area: 9,522.815 mm². Moment of inertia Ix = 16,059.191 cm⁴, Iy = 7,855.332 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	350 mm	13.78 in
Width (b)	220 mm	8.66 in
Thickness (t)	8.8 mm	0.35 in
Fillet radius (r)	17.6 mm	0.69 in
Weight	74.8 kg/m	50.23 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	9,522.81 mm²	14.760 in²
Moment of inertia (Ix)	16,059.19 cm⁴	385.82 in⁴
Moment of inertia (Iy)	7,855.33 cm⁴	188.72 in⁴
Elastic section modulus (Sx)	917.67 cm³	56.000 in³
Elastic section modulus (Sy)	714.12 cm³	43.579 in³
Plastic section modulus (Zx)	1,112.15 cm³	67.868 in³
Plastic section modulus (Zy)	809.14 cm³	49.377 in³
Radius of gyration (rx)	12.99 cm	5.113 in
Radius of gyration (ry)	9.08 cm	3.576 in