17.5 m
Proportions require correction
Axis ratio exceeds the hard publication limit.
Bertha SR 99 Tunnel-Boring Machine
Bertha SR 99 Tunnel-Boring Machine is presented in a strict left-facing orthographic side profile for a clear visual size comparison. The verified reference uses a height of 17.5 m, length of 99.4 m, width of 17.5 m and weight of 6,350,000 kg. The artwork is uniformly scaled from the documented measurement contract, while its natural or architectural proportions remain unchanged. Source claims and measurement notes explain exactly which model, specimen, state or representative range is shown.
Dimensions
- Height
- 17.5 m
- Length
- 99.4 m
- Width
- 17.5 m
- Weight
- 6,350 t
What do these numbers mean?
That is about 0.2 football fields measuring 105 m × 68 m.
Calculation
1,739.5 m² ÷ (105 m × 68 m) = 0.24 ≈ 0.2
Quick facts
- Length
- 99.4 m
- Cutterhead diameter
- 17.5 m
- Mass
- nearly 7,000 short tons
- Tunnelling began
- 2013
- Breakthrough
- 2017
Bertha SR 99 Tunnel-Boring Machine · Size infographic
Related objects
Sources and measurement33 References
Dimensions were cross-checked against independent sources before publication.
Measurement basis
The complete assembled side contour uses 99.4 m length by 17.5 m cutterhead diameter.