RHS 120x100x3 · Weight & Dimensions

BR — 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 120x100 cal 11 (México) · Caño estructural 120x100 (Argentina)

The RHS 120x100x3 steel profile weighs 9.8 kg/m (6.57 lb/ft), has a depth of 120 mm (4.72 in), flange width 100 mm (3.94 in). Cross-sectional area: 1,284 mm². Moment of inertia Ix = 279.46 cm⁴, Iy = 210.95 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 3 mm ≈ 11 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	120 mm	4.72 in
Width (b)	100 mm	3.94 in
Thickness (t)	3 mm	0.12 in
Fillet radius (r)	6 mm	0.24 in
Weight	9.8 kg/m	6.57 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,284 mm²	1.990 in²
Moment of inertia (Ix)	279.46 cm⁴	6.71 in⁴
Moment of inertia (Iy)	210.95 cm⁴	5.07 in⁴
Elastic section modulus (Sx)	46.58 cm³	2.842 in³
Elastic section modulus (Sy)	42.19 cm³	2.575 in³
Plastic section modulus (Zx)	54.59 cm³	3.331 in³
Plastic section modulus (Zy)	48.17 cm³	2.940 in³
Radius of gyration (rx)	4.67 cm	1.839 in
Radius of gyration (ry)	4.05 cm	1.594 in