Joseph Bazalgette; construction of the sewers

The video discusses the cholera outbreak in London and the subsequent construction of an extensive sewer system to combat it. Over 16 years, 82 miles of main sewers and 1,100 miles of street sewers were built, along with pumping stations and treatment works. The design included doubling the tunnel size to accommodate future needs and constructing embankments along the River Thames to house sewer pipes. The innovative design featured brick tunnels shaped like upside-down eggs to support the city's weight, hailed as a modern engineering marvel.

What was the estimated number of Londoners who had died from cholera by the time the project was initiated?

Describe the scale of the sewer construction project mentioned in the text.

What innovative solution was proposed to avoid digging up half of London?

What was the public perception of the sewer construction project as described by The Observer?

How did the design of the tunnels contribute to their structural integrity?