Steel Section Catalog
RHS 140x80x4
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 140x80x4 steel profile weighs 12.9 kg/m (8.67 lb/ft), has a depth of 140 mm (5.51 in), flange width 80 mm (3.15 in). Cross-sectional area: 1,696 mm². Moment of inertia Ix = 449.35 cm⁴, Iy = 186.76 cm⁴.
Cross-section (not to scale)
Gauge equivalent: 4 mm ≈ 8 gauge (Manufacturers Standard Gage)
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth (h) | 140 mm | 5.51 in |
| Width (b) | 80 mm | 3.15 in |
| Thickness (t) | 4 mm | 0.16 in |
| Fillet radius (r) | 8 mm | 0.31 in |
| Weight | 12.9 kg/m | 8.67 lb/ft |
Section Properties
| Property | Metric | Imperial |
|---|---|---|
| Area (A) | 1,696 mm² | 2.629 in² |
| Moment of inertia (Ix) | 449.35 cm⁴ | 10.80 in⁴ |
| Moment of inertia (Iy) | 186.76 cm⁴ | 4.49 in⁴ |
| Elastic section modulus (Sx) | 64.19 cm³ | 3.917 in³ |
| Elastic section modulus (Sy) | 46.69 cm³ | 2.849 in³ |
| Plastic section modulus (Zx) | 78.37 cm³ | 4.782 in³ |
| Plastic section modulus (Zy) | 52.93 cm³ | 3.230 in³ |
| Radius of gyration (rx) | 5.15 cm | 2.028 in |
| Radius of gyration (ry) | 3.32 cm | 1.307 in |
Beam Calculator— RHS 140x80x4
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mfixed @ 0mfixed @ 6m→kN/m
Results — RHS 140x80x4
Mmax
15.0 kN·m
Vmax
15.0 kN
δmax
18.78 mm
L/320
R115.0 kN| 15.0 kN·mR215.0 kN| -15.0 kN·m
Standard:
