RHS 178x76x7.9 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 178x76 (México) · Caño estructural 178x76 (Argentina)

The RHS 178x76x7.9 steel profile weighs 28.4 kg/m (19.09 lb/ft), has a depth of 178 mm (7.01 in), flange width 76 mm (2.99 in). Cross-sectional area: 3,602.84 mm². Moment of inertia Ix = 1,308.081 cm⁴, Iy = 334.92 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	178 mm	7.01 in
Width (b)	76 mm	2.99 in
Thickness (t)	7.9 mm	0.31 in
Fillet radius (r)	15.8 mm	0.62 in
Weight	28.4 kg/m	19.09 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	3,602.84 mm²	5.584 in²
Moment of inertia (Ix)	1,308.08 cm⁴	31.43 in⁴
Moment of inertia (Iy)	334.92 cm⁴	8.05 in⁴
Elastic section modulus (Sx)	146.98 cm³	8.969 in³
Elastic section modulus (Sy)	88.14 cm³	5.378 in³
Plastic section modulus (Zx)	191.98 cm³	11.716 in³
Plastic section modulus (Zy)	104.21 cm³	6.359 in³
Radius of gyration (rx)	6.03 cm	2.372 in
Radius of gyration (ry)	3.05 cm	1.200 in