Steel Section Catalog
RHS 70x30x2
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 70x30x2 steel profile weighs 2.9 kg/m (1.93 lb/ft), has a depth of 70 mm (2.76 in), flange width 30 mm (1.18 in). Cross-sectional area: 384 mm². Moment of inertia Ix = 23.46 cm⁴, Iy = 6.08 cm⁴.
Cross-section (not to scale)
Gauge equivalent: 2 mm ≈ 14 gauge (Manufacturers Standard Gage)
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth (h) | 70 mm | 2.76 in |
| Width (b) | 30 mm | 1.18 in |
| Thickness (t) | 2 mm | 0.08 in |
| Fillet radius (r) | 4 mm | 0.16 in |
| Weight | 2.9 kg/m | 1.93 lb/ft |
Section Properties
| Property | Metric | Imperial |
|---|---|---|
| Area (A) | 384 mm² | 0.595 in² |
| Moment of inertia (Ix) | 23.46 cm⁴ | 0.56 in⁴ |
| Moment of inertia (Iy) | 6.08 cm⁴ | 0.15 in⁴ |
| Elastic section modulus (Sx) | 6.7 cm³ | 0.409 in³ |
| Elastic section modulus (Sy) | 4.06 cm³ | 0.248 in³ |
| Plastic section modulus (Zx) | 8.44 cm³ | 0.515 in³ |
| Plastic section modulus (Zy) | 4.6 cm³ | 0.281 in³ |
| Radius of gyration (rx) | 2.47 cm | 0.972 in |
| Radius of gyration (ry) | 1.26 cm | 0.496 in |
Beam Calculator— RHS 70x30x2
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mfixed @ 0mfixed @ 6m→kN/m
Results — RHS 70x30x2
Mmax
15.0 kN·m
Vmax
15.0 kN
δmax
359.65 mm
L/17
R115.0 kN| 15.0 kN·mR215.0 kN| -15.0 kN·m
Standard:
