Steel Beam Sizes / Europe / RHS / RHS 300×100×8.8
RHS 300×100×8.8 Steel Beam Dimensions and Properties
EN Rectangular hollow sections · v2026.1
Diagram, properties emphasis, and nearby alternatives use the selected unit system.
Section diagram
RHS 300×100×8.8 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 | 35.08 lb/ft | 52.20 kg/m |
| Height | 11.81 in | 300.00 mm |
| Width | 3.94 in | 100.00 mm |
| t | 0.346 in | 8.800 mm |
| Area | 10.31 in² | 6,650.00 mm² |
| Ix | 164.33 in⁴ | 68,400,000 mm⁴ |
| Iy | 27.87 in⁴ | 11,600,000 mm⁴ |
| Sx | 27.83 in³ | 456,000.00 mm³ |
| Sy | 14.16 in³ | 232,000.00 mm³ |
| Zx | 36.25 in³ | 594,000.00 mm³ |
| Zy | 16.23 in³ | 266,000.00 mm³ |
| rx | 3.98 in | 101.00 mm |
| ry | 1.65 in | 41.80 mm |
| J | 79.76 in⁴ | 33,200,000 mm⁴ |
Alternatives
Useful nearby sections
Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus RHS 300×100×8.8.
Lighter in Rectangular hollow sections
RHS 200×150×10
- Weight
- 51.0 kg/m (-2.3%)
- Depth
- 200.0 mm (-33%)
- Ix
- 35,700,000 mm⁴ (-48%)
Heavier in Rectangular hollow sections
RHS 200×100×12.5
- Weight
- 52.7 kg/m (+1.0%)
- Depth
- 200.0 mm (-33%)
- Ix
- 31,400,000 mm⁴ (-54%)
Closest Iₓ in Rectangular hollow sections
RHS 260×180×8.8
- Weight
- 57.7 kg/m (+11%)
- Depth
- 260.0 mm (-13%)
- Ix
- 69,400,000 mm⁴ (+1.5%)
Source: Eurocode 3 UK National Annex and ArcelorMittal Sections 2026-1 · v2026.1 · Hot-finished hollow sections · Methodology