RHS 100x80x9.5 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 100x80 (México) · Caño estructural 100x80 (Argentina)

The RHS 100x80x9.5 steel profile weighs 22.2 kg/m (14.91 lb/ft), has a depth of 100 mm (3.94 in), flange width 80 mm (3.15 in). Cross-sectional area: 2,826.586 mm². Moment of inertia Ix = 342.681 cm⁴, Iy = 239.706 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	100 mm	3.94 in
Width (b)	80 mm	3.15 in
Thickness (t)	9.5 mm	0.37 in
Fillet radius (r)	19 mm	0.75 in
Weight	22.2 kg/m	14.91 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	2,826.59 mm²	4.381 in²
Moment of inertia (Ix)	342.68 cm⁴	8.23 in⁴
Moment of inertia (Iy)	239.71 cm⁴	5.76 in⁴
Elastic section modulus (Sx)	68.54 cm³	4.182 in³
Elastic section modulus (Sy)	59.93 cm³	3.657 in³
Plastic section modulus (Zx)	88.74 cm³	5.415 in³
Plastic section modulus (Zy)	75.77 cm³	4.624 in³
Radius of gyration (rx)	3.48 cm	1.371 in
Radius of gyration (ry)	2.91 cm	1.146 in