Steel Beam Sizes / UK / Rolled Steel Joists / RSJ 76×76×15
RSJ 76×76×15 Dimensions, Weight and Section Properties
UK Rolled steel joists · v2023.11
RSJ 76×76×15: 76.2 mm depth, 80 mm flange width, 15 kg/m weight. View the full dimensions and properties in imperial and metric units below.
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Section diagram
RSJ 76×76×15 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 | 10.08 lb/ft | 15.00 kg/m |
| Depth, d | 3.00 in | 76.20 mm |
| Flange width, bf | 3.15 in | 80.00 mm |
| tw | 0.350 in | 8.900 mm |
| tf | 0.331 in | 8.400 mm |
| Area | 2.96 in² | 1,910.00 mm² |
| Ix | 4.13 in⁴ | 1,720,000 mm⁴ |
| Iy | 1.46 in⁴ | 609,000.00 mm⁴ |
| Sx | 2.76 in³ | 45,200.00 mm³ |
| Sy | 0.93 in³ | 15,200.00 mm³ |
| Zx | 3.31 in³ | 54,200.00 mm³ |
| Zy | 1.57 in³ | 25,800.00 mm³ |
| rx | 1.18 in | 30.00 mm |
| ry | 0.70 in | 17.80 mm |
| J | 0.16 in⁴ | 68,300.00 mm⁴ |
| Cw | 2.61 in⁶ | 700,000,000 mm⁶ |
Alternatives
Useful nearby sections
Compare weight neighbors, another Ix option, and a nearby depth series when available, with percent change versus RSJ 76×76×15.
Lighter in Rolled steel joists
RSJ 76×76×13
- Weight
- 13.0 kg/m (-13%)
- Depth
- 76.2 mm (0.0%)
- Ix
- 1,580,000 mm⁴ (-8.1%)
Heavier in Rolled steel joists
RSJ 127×76×16
- Weight
- 16.0 kg/m (+6.7%)
- Depth
- 127.0 mm (+67%)
- Ix
- 5,710,000 mm⁴ (+232%)
Another Iₓ option in Rolled steel joists
RSJ 102×44×7
- Weight
- 7.0 kg/m (-53%)
- Depth
- 101.6 mm (+33%)
- Ix
- 1,530,000 mm⁴ (-11%)
Source: British-Sections-1 and Eurocode 3 UK shared angle/hollow tables · v2023.11 · Methodology