RHS 100x40x5.49 Acindar · Weight & Dimensions

Acindar, 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 100x40 (México) · Caño estructural 100x40 (Argentina)

The RHS 100x40x5.49 steel profile weighs 10.5 kg/m (7.06 lb/ft), has a depth of 100 mm (3.94 in), flange width 40 mm (1.57 in). Cross-sectional area: 1,338.928 mm². Moment of inertia Ix = 144.119 cm⁴, Iy = 32.429 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 5.49 mm ≈ 4 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	100 mm	3.94 in
Width (b)	40 mm	1.57 in
Thickness (t)	5.5 mm	0.22 in
Fillet radius (r)	11.0 mm	0.43 in
Weight	10.5 kg/m	7.06 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,338.93 mm²	2.075 in²
Moment of inertia (Ix)	144.12 cm⁴	3.46 in⁴
Moment of inertia (Iy)	32.43 cm⁴	0.78 in⁴
Elastic section modulus (Sx)	28.82 cm³	1.759 in³
Elastic section modulus (Sy)	16.21 cm³	0.989 in³
Plastic section modulus (Zx)	38.7 cm³	2.362 in³
Plastic section modulus (Zy)	19.78 cm³	1.207 in³
Radius of gyration (rx)	3.28 cm	1.292 in
Radius of gyration (ry)	1.56 cm	0.613 in