RHS 160x80x4.5 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 6 (México) · Caño estructural 160x80 (Argentina)
The RHS 160x80x4.5 steel profile weighs 15.9 kg/m (10.69 lb/ft), has a depth of 160 mm (6.30 in), flange width 80 mm (3.15 in). Cross-sectional area: 2,026.852 mm². Moment of inertia Ix = 660.924 cm⁴, Iy = 224.31 cm⁴.
Cross-section (not to scale)
Gauge equivalent: 4.5 mm ≈ 7 gauge (Manufacturers Standard Gage)
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth (h) | 160 mm | 6.30 in |
| Width (b) | 80 mm | 3.15 in |
| Thickness (t) | 4.5 mm | 0.18 in |
| Fillet radius (r) | 9 mm | 0.35 in |
| Weight | 15.9 kg/m | 10.69 lb/ft |
Section Properties
| Property | Metric | Imperial |
|---|---|---|
| Area (A) | 2,026.85 mm² | 3.142 in² |
| Moment of inertia (Ix) | 660.92 cm⁴ | 15.88 in⁴ |
| Moment of inertia (Iy) | 224.31 cm⁴ | 5.39 in⁴ |
| Elastic section modulus (Sx) | 82.62 cm³ | 5.042 in³ |
| Elastic section modulus (Sy) | 56.08 cm³ | 3.422 in³ |
| Plastic section modulus (Zx) | 103.15 cm³ | 6.295 in³ |
| Plastic section modulus (Zy) | 63.66 cm³ | 3.885 in³ |
| Radius of gyration (rx) | 5.71 cm | 2.248 in |
| Radius of gyration (ry) | 3.33 cm | 1.310 in |
Beam Calculator— RHS 160x80x4.5
drag to orbit
mfixed @ 0mfixed @ 6m→kN/m
Results — RHS 160x80x4.5
Mmax
15.0 kN·m
Vmax
15.0 kN
δmax
12.77 mm
L/470
R115.0 kN| 15.0 kN·mR215.0 kN| -15.0 kN·m
Standard:
