How Was The London Underground Built?

16 September 2016, 14:04

London Underground

Mystery Hour Question

Gary, Ilford

When I travel on the London underground, I see so many tunnels.  Given the Victorians didn’t have any GPS, how were these tunnels built?

Answer

Name: Michael Croydon

Qualification: Underground miner

Answer: It's similar surveying equipment that is used in construction.  They find laser points and set lasers up to direct the line.  Keeping the laser in the centre, the next point will be 2 meters ahead and the laser will change its point to where the tunnel needs to go.  The Victorian probably used string line in a similar way.

 

 

Name: Tony, Ealing

Answer: They excavated all the ground and then built it from scratch from the bottom up.  It’s called cut and cover, and they did this because they didn’t have any other way to navigate the ground.

 

Al Gore, speaking to James O'Brien on LBC

Al Gore Slams BBC For "Engaging In Climate Change Denial"

Shelagh had little time for Tom's claim people "should stick to their own group"

Remarkable Moment Shelagh Receives Call From A White Nationalist

Donald Trump has been criticised over his comments to North Korea

Trump Is Putting Our Lives In Danger, Guam Senator Tells LBC

The Sutton Estate, currently empty in Kensington and Chelsea

Enough Empty Council Flats In One Chelsea Block To House All Grenfell Families

Comments

Loading...