RHS 120x80x4.8 Açotubo · Weight & Dimensions
Açotubo, 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 120x80 cal 6 (México) · Caño estructural 120x80 (Argentina)
The RHS 120x80x4.8 steel profile weighs 13.9 kg/m (9.33 lb/ft), has a depth of 120 mm (4.72 in), flange width 80 mm (3.15 in). Cross-sectional area: 1,768.507 mm². Moment of inertia Ix = 341.887 cm⁴, Iy = 181.942 cm⁴.
Cross-section (not to scale)
Gauge equivalent: 4.8 mm ≈ 7 gauge (Manufacturers Standard Gage)
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth (h) | 120 mm | 4.72 in |
| Width (b) | 80 mm | 3.15 in |
| Thickness (t) | 4.8 mm | 0.19 in |
| Fillet radius (r) | 9.6 mm | 0.38 in |
| Weight | 13.9 kg/m | 9.33 lb/ft |
Section Properties
| Property | Metric | Imperial |
|---|---|---|
| Area (A) | 1,768.51 mm² | 2.741 in² |
| Moment of inertia (Ix) | 341.89 cm⁴ | 8.21 in⁴ |
| Moment of inertia (Iy) | 181.94 cm⁴ | 4.37 in⁴ |
| Elastic section modulus (Sx) | 56.98 cm³ | 3.477 in³ |
| Elastic section modulus (Sy) | 45.49 cm³ | 2.776 in³ |
| Plastic section modulus (Zx) | 69.98 cm³ | 4.271 in³ |
| Plastic section modulus (Zy) | 52.89 cm³ | 3.228 in³ |
| Radius of gyration (rx) | 4.4 cm | 1.731 in |
| Radius of gyration (ry) | 3.21 cm | 1.263 in |
Beam Calculator— RHS 120x80x4.8
drag to orbit
mfixed @ 0mfixed @ 6m→kN/m
Results — RHS 120x80x4.8
Mmax
15.0 kN·m
Vmax
15.0 kN
δmax
24.68 mm
L/243
R115.0 kN| 15.0 kN·mR215.0 kN| -15.0 kN·m
Standard:
