Steel Beam Sizes / Australia / RHS / 125×75×2.8 RHS
125×75×2.8 RHS Steel Beam Dimensions and Properties
ASNZS Rectangular hollow sections · v2019.11
Diagram, properties emphasis, and nearby alternatives use the selected unit system.
Section diagram
125×75×2.8 RHS dimensions
Not to scale. Dimensions shown for reference.
Section properties
Symbols match the steel section finder. Imperial and metric values are shown side by side.
| Property | Imperial | Metric |
|---|---|---|
| Weight | 5.64 lb/ft | 8.40 kg/m |
| Height | 4.92 in | 125.00 mm |
| Width | 2.95 in | 75.00 mm |
| t | 0.110 in | 2.800 mm |
| Area | 1.66 in² | 1,070.00 mm² |
| Ix | 5.50 in⁴ | 2,290,000 mm⁴ |
| Iy | 2.50 in⁴ | 1,040,000 mm⁴ |
| Sx | 2.24 in³ | 36,640.00 mm³ |
| Sy | 1.69 in³ | 27,733.33 mm³ |
| Zx | 2.71 in³ | 44,400.00 mm³ |
| Zy | 1.91 in³ | 31,300.00 mm³ |
| rx | 1.82 in | 46.26 mm |
| ry | 1.23 in | 31.18 mm |
| J | 5.48 in⁴ | 2,280,000 mm⁴ |
Alternatives
Useful nearby sections
Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus 125×75×2.8 RHS.
Lighter in Rectangular hollow sections
75×50×5.0 RHS
- Weight
- 8.3 kg/m (-0.9%)
- Depth
- 75.0 mm (-40%)
- Ix
- 726,000 mm⁴ (-68%)
Heavier in Rectangular hollow sections
100×50×4.0 RHS
- Weight
- 8.5 kg/m (+0.9%)
- Depth
- 100.0 mm (-20%)
- Ix
- 1,310,000 mm⁴ (-43%)
Closest Iₓ in Rectangular hollow sections
125×75×3.0 RHS
- Weight
- 8.9 kg/m (+6.5%)
- Depth
- 125.0 mm (0.0%)
- Ix
- 2,430,000 mm⁴ (+6.1%)
Source: Australian-Sections.xlsx (Sheets 1-19) · v2019.11 · Methodology