Steel Section Catalog
RHS 90x30x3
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 90x30x3 steel profile weighs 5.2 kg/m (3.49 lb/ft), has a depth of 90 mm (3.54 in), flange width 30 mm (1.18 in). Cross-sectional area: 684 mm². Moment of inertia Ix = 63.71 cm⁴, Iy = 10.57 cm⁴.
Cross-section (not to scale)
Gauge equivalent: 3 mm ≈ 11 gauge (Manufacturers Standard Gage)
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth (h) | 90 mm | 3.54 in |
| Width (b) | 30 mm | 1.18 in |
| Thickness (t) | 3 mm | 0.12 in |
| Fillet radius (r) | 6 mm | 0.24 in |
| Weight | 5.2 kg/m | 3.49 lb/ft |
Section Properties
| Property | Metric | Imperial |
|---|---|---|
| Area (A) | 684 mm² | 1.060 in² |
| Moment of inertia (Ix) | 63.71 cm⁴ | 1.53 in⁴ |
| Moment of inertia (Iy) | 10.57 cm⁴ | 0.25 in⁴ |
| Elastic section modulus (Sx) | 14.16 cm³ | 0.864 in³ |
| Elastic section modulus (Sy) | 7.05 cm³ | 0.430 in³ |
| Plastic section modulus (Zx) | 18.41 cm³ | 1.123 in³ |
| Plastic section modulus (Zy) | 8.15 cm³ | 0.497 in³ |
| Radius of gyration (rx) | 3.05 cm | 1.201 in |
| Radius of gyration (ry) | 1.24 cm | 0.488 in |
Beam Calculator— RHS 90x30x3
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mfixed @ 0mfixed @ 6m→kN/m
Results — RHS 90x30x3
Mmax
15.0 kN·m
Vmax
15.0 kN
δmax
132.44 mm
L/45
R115.0 kN| 15.0 kN·mR215.0 kN| -15.0 kN·m
Standard:
