RHS 100x80x8.8 V&M do Brasil · Weight & Dimensions

V&M do Brasil, hot-rolled 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 100x80x8.8 steel profile weighs 20.9 kg/m (14.02 lb/ft), has a depth of 100 mm (3.94 in), flange width 80 mm (3.15 in). Cross-sectional area: 2,658.815 mm². Moment of inertia Ix = 329.268 cm⁴, Iy = 230.644 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)	8.8 mm	0.35 in
Fillet radius (r)	17.6 mm	0.69 in
Weight	20.9 kg/m	14.02 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	2,658.81 mm²	4.121 in²
Moment of inertia (Ix)	329.27 cm⁴	7.91 in⁴
Moment of inertia (Iy)	230.64 cm⁴	5.54 in⁴
Elastic section modulus (Sx)	65.85 cm³	4.019 in³
Elastic section modulus (Sy)	57.66 cm³	3.519 in³
Plastic section modulus (Zx)	84.44 cm³	5.153 in³
Plastic section modulus (Zy)	72.14 cm³	4.402 in³
Radius of gyration (rx)	3.52 cm	1.385 in
Radius of gyration (ry)	2.95 cm	1.160 in