Steel Beam Sizes / Australia / Beam Tees / 125 BT 18
125 BT 18 Dimensions, Weight and Section Properties
ASNZS Tees cut from universal beams · v2019.11
125 BT 18: 127 mm depth, 146.4 mm flange width, 18 kg/m weight. View the full dimensions and properties in imperial and metric units below.
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Section diagram
125 BT 18 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 | 12.10 lb/ft | 18.00 kg/m |
| Depth, d | 5.00 in | 127.00 mm |
| Flange width, bf | 5.76 in | 146.40 mm |
| tw | 0.252 in | 6.400 mm |
| tf | 0.429 in | 10.900 mm |
| Area | 3.66 in² | 2,360.00 mm² |
| Ix | 6.97 in⁴ | 2,900,000 mm⁴ |
| Iy | 6.85 in⁴ | 2,850,000 mm⁴ |
| Sx | 1.74 in³ | 28,571.43 mm³ |
| Sy | 2.38 in³ | 38,934.43 mm³ |
| Zx | 3.09 in³ | 50,600.00 mm³ |
| Zy | 3.66 in³ | 60,000.00 mm³ |
| rx | 1.38 in | 35.05 mm |
| ry | 1.37 in | 34.75 mm |
| J | 0.18 in⁴ | 77,000.00 mm⁴ |
Alternatives
Useful nearby sections
Compare weight neighbors, another Ix option, and a nearby depth series when available, with percent change versus 125 BT 18.
Lighter in Tees cut from universal beams
100 BT 15
- Weight
- 15.0 kg/m (-17%)
- Depth
- 102.0 mm (-20%)
- Ix
- 1,480,000 mm⁴ (-49%)
Heavier in Tees cut from universal beams
155 BT 20
- Weight
- 20.0 kg/m (+11%)
- Depth
- 151.0 mm (+19%)
- Ix
- 4,680,000 mm⁴ (+61%)
Another Iₓ option in Tees cut from universal beams
125 BT 15
- Weight
- 15.0 kg/m (-17%)
- Depth
- 125.0 mm (-1.6%)
- Ix
- 2,580,000 mm⁴ (-11%)
Source: Australian-Sections.xlsx (Sheets 1-19) · v2019.11 · Methodology