Steel Section Catalog
RHS 30x20x2 — 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 30x20 cal 15 (México) · Caño estructural 30x20 (Argentina)
The RHS 30x20x2 steel profile weighs 1.4 kg/m (0.91 lb/ft), has a depth of 30 mm (1.18 in), flange width 20 mm (0.79 in). Cross-sectional area: 184 mm². Moment of inertia Ix = 2.16 cm⁴, Iy = 1.11 cm⁴.
Cross-section (not to scale)
Gauge equivalent: 2 mm ≈ 14 gauge (Manufacturers Standard Gage)
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth (h) | 30 mm | 1.18 in |
| Width (b) | 20 mm | 0.79 in |
| Thickness (t) | 2 mm | 0.08 in |
| Fillet radius (r) | 4 mm | 0.16 in |
| Weight | 1.4 kg/m | 0.91 lb/ft |
Section Properties
| Property | Metric | Imperial |
|---|---|---|
| Area (A) | 184 mm² | 0.285 in² |
| Moment of inertia (Ix) | 2.16 cm⁴ | 0.05 in⁴ |
| Moment of inertia (Iy) | 1.11 cm⁴ | 0.03 in⁴ |
| Elastic section modulus (Sx) | 1.44 cm³ | 0.088 in³ |
| Elastic section modulus (Sy) | 1.11 cm³ | 0.068 in³ |
| Plastic section modulus (Zx) | 1.8 cm³ | 0.110 in³ |
| Plastic section modulus (Zy) | 1.34 cm³ | 0.082 in³ |
| Radius of gyration (rx) | 1.08 cm | 0.425 in |
| Radius of gyration (ry) | 0.78 cm | 0.307 in |
Beam Calculator— RHS 30x20x2
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mfixed @ 0mfixed @ 6m→kN/m
Results — RHS 30x20x2
Mmax
15.0 kN·m
Vmax
15.0 kN
δmax
3906.25 mm
L/2
R115.0 kN| 15.0 kN·mR215.0 kN| -15.0 kN·m
Standard:
