RHS 159x100x3.75 Tecnometal · Weight & Dimensions

Tecnometal, cold-formed sections (Brazil) · 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 159x100 cal 8 (México) · Caño estructural 159x100 (Argentina)

The RHS 159x100x3.75 steel profile weighs 14.5 kg/m (9.76 lb/ft), has a depth of 159 mm (6.26 in), flange width 100 mm (3.94 in). Cross-sectional area: 1,850.036 mm². Moment of inertia Ix = 646.86 cm⁴, Iy = 316.995 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 3.75 mm ≈ 9 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	159 mm	6.26 in
Width (b)	100 mm	3.94 in
Thickness (t)	3.8 mm	0.15 in
Fillet radius (r)	7.5 mm	0.30 in
Weight	14.5 kg/m	9.76 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,850.04 mm²	2.868 in²
Moment of inertia (Ix)	646.86 cm⁴	15.54 in⁴
Moment of inertia (Iy)	316.99 cm⁴	7.62 in⁴
Elastic section modulus (Sx)	81.37 cm³	4.965 in³
Elastic section modulus (Sy)	63.4 cm³	3.869 in³
Plastic section modulus (Zx)	98.4 cm³	6.005 in³
Plastic section modulus (Zy)	71.65 cm³	4.372 in³
Radius of gyration (rx)	5.91 cm	2.328 in
Radius of gyration (ry)	4.14 cm	1.630 in