CLEAN : Victorian Tunnel brought back to life for Crossrail

The video discusses the restoration of a Victorian tunnel originally built in 1878. The team removed old rail infrastructure and deepened the tunnel to accommodate modern trains, which require a larger profile due to overhead electrics. The tunnel's historical construction quality is praised, and safety measures are emphasized to prevent collapse during modifications.

What year was the Victorian structure originally built?

• 1888

• 1878

• 1908

• 1898

What was the first task the team undertook upon arrival?

• Painting the structure

• Removing old ballast and rail

• Installing new lighting

• Building a new tunnel

How long does the team believe the tunnel will last safely?

• 120 years

• 100 years

• 200 years

• 50 years

What is a significant difference between modern trains and steam trains?

• Steam trains are more efficient

• Modern trains have a larger kinematic envelope

• Steam trains have overhead electrics

• Modern trains are slower

What precaution was taken to prevent tunnel collapse during deepening?

• Using stronger materials

• Propping the walls safely

• Reducing train speed

• Widening the tunnel