Steel Beam Sizes / Australia / Beam Tees / 100 BT 12
100 BT 12 Steel Beam Dimensions and Properties
ASNZS Tees cut from universal beams · v2019.11
Diagram, properties emphasis, and nearby alternatives use the selected unit system.
Section diagram
100 BT 12 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 | 8.06 lb/ft | 12.00 kg/m |
| Depth, d | 3.98 in | 101.00 mm |
| Flange width, bf | 5.25 in | 133.40 mm |
| tw | 0.230 in | 5.840 mm |
| tf | 0.308 in | 7.820 mm |
| Area | 2.50 in² | 1,610.00 mm² |
| Ix | 3.12 in⁴ | 1,300,000 mm⁴ |
| Iy | 3.72 in⁴ | 1,550,000 mm⁴ |
| Sx | 0.99 in³ | 16,229.71 mm³ |
| Sy | 1.42 in³ | 23,238.38 mm³ |
| Zx | 1.77 in³ | 29,000.00 mm³ |
| Zy | 2.17 in³ | 35,500.00 mm³ |
| rx | 1.12 in | 28.42 mm |
| ry | 1.22 in | 31.03 mm |
| J | 0.07 in⁴ | 30,400.00 mm⁴ |
Alternatives
Useful nearby sections
Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus 100 BT 12.
Lighter in Tees cut from universal beams
90 BT 11
- Weight
- 11.0 kg/m (-8.3%)
- Depth
- 88.5 mm (-12%)
- Ix
- 857,000 mm⁴ (-34%)
Heavier in Tees cut from universal beams
100 BT 15
- Weight
- 15.0 kg/m (+25%)
- Depth
- 102.0 mm (+1.0%)
- Ix
- 1,480,000 mm⁴ (+14%)
Closest Iₓ in Tees cut from universal beams
90 BT 9
- Weight
- 9.0 kg/m (-25%)
- Depth
- 86.5 mm (-14%)
- Ix
- 684,000 mm⁴ (-47%)
Source: Australian-Sections.xlsx (Sheets 1-19) · v2019.11 · Methodology