Steel Section Catalog
RHS 120x100x5
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 120x100x5 steel profile weighs 15.8 kg/m (10.62 lb/ft), has a depth of 120 mm (4.72 in), flange width 100 mm (3.94 in). Cross-sectional area: 2,100 mm². Moment of inertia Ix = 441.75 cm⁴, Iy = 331.75 cm⁴.
Cross-section (not to scale)
Gauge equivalent: 5 mm ≈ 6 gauge (Manufacturers Standard Gage)
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth (h) | 120 mm | 4.72 in |
| Width (b) | 100 mm | 3.94 in |
| Thickness (t) | 5 mm | 0.20 in |
| Fillet radius (r) | 10 mm | 0.39 in |
| Weight | 15.8 kg/m | 10.62 lb/ft |
Section Properties
| Property | Metric | Imperial |
|---|---|---|
| Area (A) | 2,100 mm² | 3.255 in² |
| Moment of inertia (Ix) | 441.75 cm⁴ | 10.61 in⁴ |
| Moment of inertia (Iy) | 331.75 cm⁴ | 7.97 in⁴ |
| Elastic section modulus (Sx) | 73.63 cm³ | 4.493 in³ |
| Elastic section modulus (Sy) | 66.35 cm³ | 4.049 in³ |
| Plastic section modulus (Zx) | 87.75 cm³ | 5.355 in³ |
| Plastic section modulus (Zy) | 77.25 cm³ | 4.714 in³ |
| Radius of gyration (rx) | 4.59 cm | 1.807 in |
| Radius of gyration (ry) | 3.97 cm | 1.563 in |
Beam Calculator— RHS 120x100x5
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mfixed @ 0mfixed @ 6m→kN/m
Results — RHS 120x100x5
Mmax
15.0 kN·m
Vmax
15.0 kN
δmax
19.10 mm
L/314
R115.0 kN| 15.0 kN·mR215.0 kN| -15.0 kN·m
Standard:
