RHS 100x30x3.5 Hiasa · Weight & Dimensions

Hiasa, 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 100x30 cal 11 (México) · Caño estructural 100x30 (Argentina)

The RHS 100x30x3.5 steel profile weighs 6.5 kg/m (4.37 lb/ft), has a depth of 100 mm (3.94 in), flange width 30 mm (1.18 in). Cross-sectional area: 829.454 mm². Moment of inertia Ix = 88.155 cm⁴, Iy = 12.425 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 3.5 mm ≈ 10 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	100 mm	3.94 in
Width (b)	30 mm	1.18 in
Thickness (t)	3.5 mm	0.14 in
Fillet radius (r)	7 mm	0.28 in
Weight	6.5 kg/m	4.37 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	829.45 mm²	1.286 in²
Moment of inertia (Ix)	88.15 cm⁴	2.12 in⁴
Moment of inertia (Iy)	12.43 cm⁴	0.30 in⁴
Elastic section modulus (Sx)	17.63 cm³	1.076 in³
Elastic section modulus (Sy)	8.28 cm³	0.505 in³
Plastic section modulus (Zx)	23.71 cm³	1.447 in³
Plastic section modulus (Zy)	9.75 cm³	0.595 in³
Radius of gyration (rx)	3.26 cm	1.283 in
Radius of gyration (ry)	1.22 cm	0.482 in