RHS 100x80x5.2 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 100x80 (México) · Caño estructural 100x80 (Argentina)
The RHS 100x80x5.2 steel profile weighs 13.3 kg/m (8.94 lb/ft), has a depth of 100 mm (3.94 in), flange width 80 mm (3.15 in). Cross-sectional area: 1,694.206 mm². Moment of inertia Ix = 232.742 cm⁴, Iy = 164.339 cm⁴.
Cross-section (not to scale)
Gauge equivalent: 5.2 mm ≈ 6 gauge (Manufacturers Standard Gage)
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth (h) | 100 mm | 3.94 in |
| Width (b) | 80 mm | 3.15 in |
| Thickness (t) | 5.2 mm | 0.20 in |
| Fillet radius (r) | 10.4 mm | 0.41 in |
| Weight | 13.3 kg/m | 8.94 lb/ft |
Section Properties
| Property | Metric | Imperial |
|---|---|---|
| Area (A) | 1,694.21 mm² | 2.626 in² |
| Moment of inertia (Ix) | 232.74 cm⁴ | 5.59 in⁴ |
| Moment of inertia (Iy) | 164.34 cm⁴ | 3.95 in⁴ |
| Elastic section modulus (Sx) | 46.55 cm³ | 2.841 in³ |
| Elastic section modulus (Sy) | 41.08 cm³ | 2.507 in³ |
| Plastic section modulus (Zx) | 56.9 cm³ | 3.472 in³ |
| Plastic section modulus (Zy) | 48.77 cm³ | 2.976 in³ |
| Radius of gyration (rx) | 3.71 cm | 1.459 in |
| Radius of gyration (ry) | 3.11 cm | 1.226 in |
Beam Calculator— RHS 100x80x5.2
drag to orbit
mfixed @ 0mfixed @ 6m→kN/m
Results — RHS 100x80x5.2
Mmax
15.0 kN·m
Vmax
15.0 kN
δmax
36.25 mm
L/166
R115.0 kN| 15.0 kN·mR215.0 kN| -15.0 kN·m
Standard:
