Steel Section Catalog
RHS 140x80x3 — Dimensions & Section Properties
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.
Also known as: PTR 140x80 cal 11 (México) · Caño estructural 140x80 (Argentina)
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:
