RHS 100x50x3.5 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 11 (México) · Caño estructural 100x50 (Argentina)

The RHS 100x50x3.5 steel profile weighs 7.6 kg/m (5.11 lb/ft), has a depth of 100 mm (3.94 in), flange width 50 mm (1.97 in). Cross-sectional area: 969.454 mm². Moment of inertia Ix = 120.762 cm⁴, Iy = 40.683 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)	50 mm	1.97 in
Thickness (t)	3.5 mm	0.14 in
Fillet radius (r)	7 mm	0.28 in
Weight	7.6 kg/m	5.11 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	969.45 mm²	1.503 in²
Moment of inertia (Ix)	120.76 cm⁴	2.90 in⁴
Moment of inertia (Iy)	40.68 cm⁴	0.98 in⁴
Elastic section modulus (Sx)	24.15 cm³	1.474 in³
Elastic section modulus (Sy)	16.27 cm³	0.993 in³
Plastic section modulus (Zx)	30.47 cm³	1.859 in³
Plastic section modulus (Zy)	18.74 cm³	1.144 in³
Radius of gyration (rx)	3.53 cm	1.390 in
Radius of gyration (ry)	2.05 cm	0.807 in