RHS 178x102x9.5 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 178x102 (México) · Caño estructural 178x102 (Argentina)

The RHS 178x102x9.5 steel profile weighs 37.1 kg/m (24.94 lb/ft), has a depth of 178 mm (7.01 in), flange width 102 mm (4.02 in). Cross-sectional area: 4,726.586 mm². Moment of inertia Ix = 1,836.919 cm⁴, Iy = 760.407 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	178 mm	7.01 in
Width (b)	102 mm	4.02 in
Thickness (t)	9.5 mm	0.37 in
Fillet radius (r)	19 mm	0.75 in
Weight	37.1 kg/m	24.94 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	4,726.59 mm²	7.326 in²
Moment of inertia (Ix)	1,836.92 cm⁴	44.13 in⁴
Moment of inertia (Iy)	760.41 cm⁴	18.27 in⁴
Elastic section modulus (Sx)	206.4 cm³	12.595 in³
Elastic section modulus (Sy)	149.1 cm³	9.099 in³
Plastic section modulus (Zx)	263.09 cm³	16.055 in³
Plastic section modulus (Zy)	177.7 cm³	10.844 in³
Radius of gyration (rx)	6.23 cm	2.454 in
Radius of gyration (ry)	4.01 cm	1.579 in