Steel Section Catalog
RHS 140x80x5
BR — 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.
The RHS 140x80x5 steel profile weighs 15.8 kg/m (10.62 lb/ft), has a depth of 140 mm (5.51 in), flange width 80 mm (3.15 in). Cross-sectional area: 2,100 mm². Moment of inertia Ix = 547.75 cm⁴, Iy = 225.75 cm⁴.
Cross-section (not to scale)
Gauge equivalent: 5 mm ≈ 6 gauge (Manufacturers Standard Gage)
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth (h) | 140 mm | 5.51 in |
| Width (b) | 80 mm | 3.15 in |
| Thickness (t) | 5 mm | 0.20 in |
| Fillet radius (r) | 10 mm | 0.39 in |
| Weight | 15.8 kg/m | 10.62 lb/ft |
Section Properties
| Property | Metric | Imperial |
|---|---|---|
| Area (A) | 2,100 mm² | 3.255 in² |
| Moment of inertia (Ix) | 547.75 cm⁴ | 13.16 in⁴ |
| Moment of inertia (Iy) | 225.75 cm⁴ | 5.42 in⁴ |
| Elastic section modulus (Sx) | 78.25 cm³ | 4.775 in³ |
| Elastic section modulus (Sy) | 56.44 cm³ | 3.444 in³ |
| Plastic section modulus (Zx) | 96.25 cm³ | 5.874 in³ |
| Plastic section modulus (Zy) | 64.75 cm³ | 3.951 in³ |
| Radius of gyration (rx) | 5.11 cm | 2.012 in |
| Radius of gyration (ry) | 3.28 cm | 1.291 in |
Beam Calculator— RHS 140x80x5
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mfixed @ 0mfixed @ 6m→kN/m
Results — RHS 140x80x5
Mmax
15.0 kN·m
Vmax
15.0 kN
δmax
15.40 mm
L/390
R115.0 kN| 15.0 kN·mR215.0 kN| -15.0 kN·m
Standard:
