RHS 178x76x4.8 IMCA · Weight & Dimensions

IMCA, 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 178x76 cal 6 (México) · Caño estructural 178x76 (Argentina)

The RHS 178x76x4.8 steel profile weighs 17.8 kg/m (11.98 lb/ft), has a depth of 178 mm (7.01 in), flange width 76 mm (2.99 in). Cross-sectional area: 2,286.907 mm². Moment of inertia Ix = 883.317 cm⁴, Iy = 232.162 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 4.8 mm ≈ 7 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	178 mm	7.01 in
Width (b)	76 mm	2.99 in
Thickness (t)	4.8 mm	0.19 in
Fillet radius (r)	9.6 mm	0.38 in
Weight	17.8 kg/m	11.98 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	2,286.91 mm²	3.545 in²
Moment of inertia (Ix)	883.32 cm⁴	21.22 in⁴
Moment of inertia (Iy)	232.16 cm⁴	5.58 in⁴
Elastic section modulus (Sx)	99.25 cm³	6.057 in³
Elastic section modulus (Sy)	61.1 cm³	3.728 in³
Plastic section modulus (Zx)	126.02 cm³	7.690 in³
Plastic section modulus (Zy)	69.21 cm³	4.224 in³
Radius of gyration (rx)	6.21 cm	2.447 in
Radius of gyration (ry)	3.19 cm	1.254 in