RHS 76.2x50.8x4.78 CISC · Weight & Dimensions

CISC, 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 76.2x50.8 cal 6 (México) · Caño estructural 76.2x50.8 (Argentina)

The RHS 76.2x50.8x4.78 steel profile weighs 8.3 kg/m (5.61 lb/ft), has a depth of 76.2 mm (3.00 in), flange width 50.8 mm (2.00 in). Cross-sectional area: 1,063.887 mm². Moment of inertia Ix = 77.468 cm⁴, Iy = 40.776 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 4.78 mm ≈ 7 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	76.2 mm	3.00 in
Width (b)	50.8 mm	2.00 in
Thickness (t)	4.8 mm	0.19 in
Fillet radius (r)	9.6 mm	0.38 in
Weight	8.3 kg/m	5.61 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,063.89 mm²	1.649 in²
Moment of inertia (Ix)	77.47 cm⁴	1.86 in⁴
Moment of inertia (Iy)	40.78 cm⁴	0.98 in⁴
Elastic section modulus (Sx)	20.33 cm³	1.241 in³
Elastic section modulus (Sy)	16.05 cm³	0.980 in³
Plastic section modulus (Zx)	25.77 cm³	1.572 in³
Plastic section modulus (Zy)	19.39 cm³	1.183 in³
Radius of gyration (rx)	2.7 cm	1.062 in
Radius of gyration (ry)	1.96 cm	0.771 in