RHS 305x203x15.8 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 305x203 (México) · Caño estructural 305x203 (Argentina)

The RHS 305x203x15.8 steel profile weighs 113.5 kg/m (76.24 lb/ft), has a depth of 305 mm (12.01 in), flange width 203 mm (7.99 in). Cross-sectional area: 14,411.362 mm². Moment of inertia Ix = 17,371.648 cm⁴, Iy = 9,167.188 cm⁴.

Cross-section (not to scale)

Dimensions

Property	Metric	Imperial
Depth (h)	305 mm	12.01 in
Width (b)	203 mm	7.99 in
Thickness (t)	15.8 mm	0.62 in
Fillet radius (r)	31.6 mm	1.24 in
Weight	113.5 kg/m	76.24 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	14,411.36 mm²	22.338 in²
Moment of inertia (Ix)	17,371.65 cm⁴	417.35 in⁴
Moment of inertia (Iy)	9,167.19 cm⁴	220.24 in⁴
Elastic section modulus (Sx)	1,139.12 cm³	69.514 in³
Elastic section modulus (Sy)	903.17 cm³	55.115 in³
Plastic section modulus (Zx)	1,421.96 cm³	86.773 in³
Plastic section modulus (Zy)	1,070.86 cm³	65.348 in³
Radius of gyration (rx)	10.98 cm	4.322 in
Radius of gyration (ry)	7.98 cm	3.140 in