33. Mesh of Electric Power, Telephone & TV-Internet Cables in Old Town Hanoi
Category – Engineering & Construction.
The mess of wires overhead provides Trouble and Chiaro with a bit of needed shade from the hot sun. But the thatch is an eyesore that cities strive to avoid. The solution is using ditches to bury pipes and wires. Sometimes utility tunnels run under streets, highways and even aqueducts. Older cities like Manhattan have a poorly documented maze of tunnels layered hundreds of feet deep. Even huge water reservoirs are hidden beneath New York’s skyscrapers. The same is true for Paris, London or Sydney. In the past, these holes were lined with brick, stone or wood – like a mine shaft. A safer, more efficient method is used now.
Question –
- How are elaborate tunnels and vaults (large storage areas) made today?
Assignment – Discover the answer by visiting the website for Wieser Concrete and seeing their work for the airport in Green Bay, Wisconsin.
Click here to research the answer. If you’d like to see more, try the hotlink below. It brings up a .PDF file from a non-profit organization. There’s a great photo on page nine.
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