RHS 406x102x7.9 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 406x102 (México) · Caño estructural 406x102 (Argentina)

The RHS 406x102x7.9 steel profile weighs 60.3 kg/m (40.49 lb/ft), has a depth of 406 mm (15.98 in), flange width 102 mm (4.02 in). Cross-sectional area: 7,616.04 mm². Moment of inertia Ix = 13,555.932 cm⁴, Iy = 1,468.402 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	406 mm	15.98 in
Width (b)	102 mm	4.02 in
Thickness (t)	7.9 mm	0.31 in
Fillet radius (r)	15.8 mm	0.62 in
Weight	60.3 kg/m	40.49 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	7,616.04 mm²	11.805 in²
Moment of inertia (Ix)	13,555.93 cm⁴	325.68 in⁴
Moment of inertia (Iy)	1,468.4 cm⁴	35.28 in⁴
Elastic section modulus (Sx)	667.78 cm³	40.751 in³
Elastic section modulus (Sy)	287.92 cm³	17.570 in³
Plastic section modulus (Zx)	889.81 cm³	54.300 in³
Plastic section modulus (Zy)	323.21 cm³	19.723 in³
Radius of gyration (rx)	13.34 cm	5.252 in
Radius of gyration (ry)	4.39 cm	1.729 in