Steel Section Catalog
RHS 90x30x3 — 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 90x30 cal 11 (México) · Caño estructural 90x30 (Argentina)
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:
