RHS 160x80x3.5 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 160x80 cal 11 (México) · Caño estructural 160x80 (Argentina)

The RHS 160x80x3.5 steel profile weighs 12.6 kg/m (8.43 lb/ft), has a depth of 160 mm (6.30 in), flange width 80 mm (3.15 in). Cross-sectional area: 1,599.454 mm². Moment of inertia Ix = 532.018 cm⁴, Iy = 181.791 cm⁴.

Cross-section (not to scale)

Gauge equivalent: 3.5 mm ≈ 10 gauge (Manufacturers Standard Gage)

Dimensions

Property	Metric	Imperial
Depth (h)	160 mm	6.30 in
Width (b)	80 mm	3.15 in
Thickness (t)	3.5 mm	0.14 in
Fillet radius (r)	7 mm	0.28 in
Weight	12.6 kg/m	8.43 lb/ft

Section Properties

Property	Metric	Imperial
Area (A)	1,599.45 mm²	2.479 in²
Moment of inertia (Ix)	532.02 cm⁴	12.78 in⁴
Moment of inertia (Iy)	181.79 cm⁴	4.37 in⁴
Elastic section modulus (Sx)	66.5 cm³	4.058 in³
Elastic section modulus (Sy)	45.45 cm³	2.773 in³
Plastic section modulus (Zx)	82.28 cm³	5.021 in³
Plastic section modulus (Zy)	50.92 cm³	3.108 in³
Radius of gyration (rx)	5.77 cm	2.271 in
Radius of gyration (ry)	3.37 cm	1.327 in