Steel Beam Sizes / UK / Rolled Steel Joists / RSJ 89×89×19
RSJ 89×89×19 Steel Beam Dimensions and Properties
UK Rolled steel joists · v2023.11
Diagram, properties emphasis, and nearby alternatives use the selected unit system.
Section diagram
RSJ 89×89×19 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 | 12.77 lb/ft | 19.00 kg/m |
| Depth, d | 3.50 in | 88.90 mm |
| Flange width, bf | 3.50 in | 89.00 mm |
| Area | 3.86 in² | 2,490.00 mm² |
| Ix | 7.38 in⁴ | 3,070,000 mm⁴ |
| Iy | 2.43 in⁴ | 1,010,000 mm⁴ |
| Sx | 4.21 in³ | 69,000.00 mm³ |
| Sy | 1.39 in³ | 22,800.00 mm³ |
| Zx | 5.05 in³ | 82,700.00 mm³ |
| Zy | 2.32 in³ | 38,000.00 mm³ |
| rx | 1.38 in | 35.10 mm |
| ry | 0.80 in | 20.20 mm |
| J | 0.28 in⁴ | 115,000.00 mm⁴ |
| Cw | 5.88 in⁶ | 1,580,000,000 mm⁶ |
Alternatives
Useful nearby sections
Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus RSJ 89×89×19.
Lighter in Rolled steel joists
RSJ 127×76×16
- Weight
- 16.0 kg/m (-16%)
- Depth
- 127.0 mm (+43%)
- Ix
- 5,710,000 mm⁴ (+86%)
Heavier in Rolled steel joists
RSJ 102×102×23
- Weight
- 23.0 kg/m (+21%)
- Depth
- 101.6 mm (+14%)
- Ix
- 4,860,000 mm⁴ (+58%)
Closest Iₓ in Rolled steel joists
RSJ 76×76×15
- Weight
- 15.0 kg/m (-21%)
- Depth
- 76.2 mm (-14%)
- Ix
- 1,720,000 mm⁴ (-44%)
Source: British-Sections-1 and Eurocode 3 UK shared angle/hollow tables · v2023.11 · Methodology