Steel Section Catalog
RHS 120x100x3 — 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 120x100 cal 11 (México) · Caño estructural 120x100 (Argentina)
The RHS 120x100x3 steel profile weighs 9.8 kg/m (6.57 lb/ft), has a depth of 120 mm (4.72 in), flange width 100 mm (3.94 in). Cross-sectional area: 1,284 mm². Moment of inertia Ix = 279.46 cm⁴, Iy = 210.95 cm⁴.
Cross-section (not to scale)
Gauge equivalent: 3 mm ≈ 11 gauge (Manufacturers Standard Gage)
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth (h) | 120 mm | 4.72 in |
| Width (b) | 100 mm | 3.94 in |
| Thickness (t) | 3 mm | 0.12 in |
| Fillet radius (r) | 6 mm | 0.24 in |
| Weight | 9.8 kg/m | 6.57 lb/ft |
Section Properties
| Property | Metric | Imperial |
|---|---|---|
| Area (A) | 1,284 mm² | 1.990 in² |
| Moment of inertia (Ix) | 279.46 cm⁴ | 6.71 in⁴ |
| Moment of inertia (Iy) | 210.95 cm⁴ | 5.07 in⁴ |
| Elastic section modulus (Sx) | 46.58 cm³ | 2.842 in³ |
| Elastic section modulus (Sy) | 42.19 cm³ | 2.575 in³ |
| Plastic section modulus (Zx) | 54.59 cm³ | 3.331 in³ |
| Plastic section modulus (Zy) | 48.17 cm³ | 2.940 in³ |
| Radius of gyration (rx) | 4.67 cm | 1.839 in |
| Radius of gyration (ry) | 4.05 cm | 1.594 in |
Beam Calculator— RHS 120x100x3
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mfixed @ 0mfixed @ 6m→kN/m
Results — RHS 120x100x3
Mmax
15.0 kN·m
Vmax
15.0 kN
δmax
30.19 mm
L/199
R115.0 kN| 15.0 kN·mR215.0 kN| -15.0 kN·m
Standard:
