RHS 305x102x4.8 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 305x102 cal 6 (México) · Caño estructural 305x102 (Argentina)

The RHS 305x102x4.8 steel profile weighs 29.3 kg/m (19.66 lb/ft), has a depth of 305 mm (12.01 in), flange width 102 mm (4.02 in). Cross-sectional area: 3,755.707 mm². Moment of inertia Ix = 4,132.135 cm⁴, Iy = 740.376 cm⁴.

Cross-section (not to scale)

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

Dimensions

Property	Metric	Imperial
Depth (h)	305 mm	12.01 in
Width (b)	102 mm	4.02 in
Thickness (t)	4.8 mm	0.19 in
Fillet radius (r)	9.6 mm	0.38 in
Weight	29.3 kg/m	19.66 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	3,755.71 mm²	5.821 in²
Moment of inertia (Ix)	4,132.14 cm⁴	99.27 in⁴
Moment of inertia (Iy)	740.38 cm⁴	17.79 in⁴
Elastic section modulus (Sx)	270.96 cm³	16.535 in³
Elastic section modulus (Sy)	145.17 cm³	8.859 in³
Plastic section modulus (Zx)	347.41 cm³	21.200 in³
Plastic section modulus (Zy)	159.82 cm³	9.753 in³
Radius of gyration (rx)	10.49 cm	4.130 in
Radius of gyration (ry)	4.44 cm	1.748 in