RHS 115x75x3.75 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 115x75 cal 8 (México) · Caño estructural 115x75 (Argentina)

The RHS 115x75x3.75 steel profile weighs 10.5 kg/m (7.03 lb/ft), has a depth of 115 mm (4.53 in), flange width 75 mm (2.95 in). Cross-sectional area: 1,332.536 mm². Moment of inertia Ix = 240.078 cm⁴, Iy = 123.888 cm⁴.

Cross-section (not to scale)

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

Dimensions

Property	Metric	Imperial
Depth (h)	115 mm	4.53 in
Width (b)	75 mm	2.95 in
Thickness (t)	3.8 mm	0.15 in
Fillet radius (r)	7.5 mm	0.30 in
Weight	10.5 kg/m	7.03 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,332.54 mm²	2.065 in²
Moment of inertia (Ix)	240.08 cm⁴	5.77 in⁴
Moment of inertia (Iy)	123.89 cm⁴	2.98 in⁴
Elastic section modulus (Sx)	41.75 cm³	2.548 in³
Elastic section modulus (Sy)	33.04 cm³	2.016 in³
Plastic section modulus (Zx)	50.9 cm³	3.106 in³
Plastic section modulus (Zy)	37.94 cm³	2.315 in³
Radius of gyration (rx)	4.24 cm	1.671 in
Radius of gyration (ry)	3.05 cm	1.200 in