RHS 100x50x4 SAISC · Weight & Dimensions

SAISC, 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 100x50 cal 8 (México) · Caño estructural 100x50 (Argentina)

The RHS 100x50x4 steel profile weighs 8.6 kg/m (5.78 lb/ft), has a depth of 100 mm (3.94 in), flange width 50 mm (1.97 in). Cross-sectional area: 1,094.796 mm². Moment of inertia Ix = 134.138 cm⁴, Iy = 44.949 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 4 mm ≈ 8 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	100 mm	3.94 in
Width (b)	50 mm	1.97 in
Thickness (t)	4 mm	0.16 in
Fillet radius (r)	8 mm	0.31 in
Weight	8.6 kg/m	5.78 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,094.8 mm²	1.697 in²
Moment of inertia (Ix)	134.14 cm⁴	3.22 in⁴
Moment of inertia (Iy)	44.95 cm⁴	1.08 in⁴
Elastic section modulus (Sx)	26.83 cm³	1.637 in³
Elastic section modulus (Sy)	17.98 cm³	1.097 in³
Plastic section modulus (Zx)	34.1 cm³	2.081 in³
Plastic section modulus (Zy)	20.93 cm³	1.277 in³
Radius of gyration (rx)	3.5 cm	1.378 in
Radius of gyration (ry)	2.03 cm	0.798 in