RHS 250x100x4.5 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 250x100 cal 6 (México) · Caño estructural 250x100 (Argentina)

The RHS 250x100x4.5 steel profile weighs 23.7 kg/m (15.91 lb/ft), has a depth of 250 mm (9.84 in), flange width 100 mm (3.94 in). Cross-sectional area: 3,016.852 mm². Moment of inertia Ix = 2,325.673 cm⁴, Iy = 557.321 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 4.5 mm ≈ 7 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	250 mm	9.84 in
Width (b)	100 mm	3.94 in
Thickness (t)	4.5 mm	0.18 in
Fillet radius (r)	9 mm	0.35 in
Weight	23.7 kg/m	15.91 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	3,016.85 mm²	4.676 in²
Moment of inertia (Ix)	2,325.67 cm⁴	55.87 in⁴
Moment of inertia (Iy)	557.32 cm⁴	13.39 in⁴
Elastic section modulus (Sx)	186.05 cm³	11.354 in³
Elastic section modulus (Sy)	111.46 cm³	6.802 in³
Plastic section modulus (Zx)	234.68 cm³	14.321 in³
Plastic section modulus (Zy)	123.51 cm³	7.537 in³
Radius of gyration (rx)	8.78 cm	3.457 in
Radius of gyration (ry)	4.3 cm	1.692 in