Steel Section Catalog
RHS 140x80x3
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 140x80x3 steel profile weighs 9.8 kg/m (6.57 lb/ft), has a depth of 140 mm (5.51 in), flange width 80 mm (3.15 in). Cross-sectional area: 1,284 mm². Moment of inertia Ix = 345.57 cm⁴, Iy = 144.83 cm⁴.
Cross-section (not to scale)
Gauge equivalent: 3 mm ≈ 11 gauge (Manufacturers Standard Gage)
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth (h) | 140 mm | 5.51 in |
| Width (b) | 80 mm | 3.15 in |
| Thickness (t) | 3 mm | 0.12 in |
| Fillet radius (r) | 6 mm | 0.24 in |
| Weight | 9.8 kg/m | 6.57 lb/ft |
Section Properties
| Property | Metric | Imperial |
|---|---|---|
| Area (A) | 1,284 mm² | 1.990 in² |
| Moment of inertia (Ix) | 345.57 cm⁴ | 8.30 in⁴ |
| Moment of inertia (Iy) | 144.83 cm⁴ | 3.48 in⁴ |
| Elastic section modulus (Sx) | 49.37 cm³ | 3.013 in³ |
| Elastic section modulus (Sy) | 36.21 cm³ | 2.210 in³ |
| Plastic section modulus (Zx) | 59.81 cm³ | 3.650 in³ |
| Plastic section modulus (Zy) | 40.55 cm³ | 2.475 in³ |
| Radius of gyration (rx) | 5.19 cm | 2.043 in |
| Radius of gyration (ry) | 3.36 cm | 1.323 in |
Beam Calculator— RHS 140x80x3
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mfixed @ 0mfixed @ 6m→kN/m
Results — RHS 140x80x3
Mmax
15.0 kN·m
Vmax
15.0 kN
δmax
24.42 mm
L/246
R115.0 kN| 15.0 kN·mR215.0 kN| -15.0 kN·m
Standard:
