New York City Subway

        The completion and achievement of building the New York City subway many years ago has proved to the today world that it is possible to build underground railroads beneath the most populous city in the United States with thousands of skyscrapers and millions of crowded and packed streets. Along with the busy lives of thousands of New Yorkers who ride the subway on the daily basis, it is sometimes difficult to stop and think how the subway was built and what kind of problems had to be faced and solved during its construction.

        The corrupt rule of the Democratic Party political machine, Tammany hall in the 1800’s in New York City, had left the city’s streets in very poor shape and traffic congestion, particularly in the Broadway area. Alfred Ely Beach, the inventor and editor of  Scientific American wanted to build a subway under Broadway to help reduce the traffic congestion. However, the major object of building the subway was to “provide for the transmission of letters, packages, and merchandise in the cities of New York and Brooklyn and under the North and East Rivers”.  Even though Beach got an idea from the subway that had been recently built in London, he believed that it was inefficient due to the fact that it used steam engines. Using two of his inventions, a hydraulic tunneling machine and a pneumatic subway, Beach proposed a new type of subway that relied on pneumatics. In 1870, Beach had designed a pneumatic (air-driven) system, which he

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demonstrated at the American Institute Fair in 1867, and he thought it practical for transit operation in underground tunnels. He applied for a permit from the Tammany Hall city

 government, but because of the opposition of William Marcy Tweed, the political boss of New York City, Beach was denied and therefore, he found it necessary to construct the experimental subway in secret, in an attempt to show that subterranean transit was viable.

Obtaining a charter for a 4-foot pneumatic tube to demonstrate mail delivery, Alfred Ely Beach actually dug an 8-foot bore tunnel 300 feet under Broadway, between Warren and Murray streets. This tunneling machine operated using a pump. A man worked the pump, and a force of 126 tons against the end of masonry moved the arms attached. The force then corresponded to the earth being removed and that was how the car would start moving. Meanwhile, in order to change the direction of the shield, the cocks in the pipes that were attached to the arms had to be turned. The arms acting upon the opposite side would advance and alter the course of the shield. Since the soil in which the tunnel was to pass through was of a loose sandy character, stones had to be removed in order to prevent the machine from slowing down. Beach constructed a small car with the capacity of ten passengers. He also built a helix fan in order to freshen the stuffy air in the tunnels.

Finally, as efforts were put on the construction of the tunneling machine and the city legislature was to examine the production, the problem rose to where it should be assembled and the location of the stations that would make it easy to build and require somewhat undemanding attempts.  

                                                                                                             

Since the main purpose of building the tunnel was to carry packages, merchandise, and eventually to move workers around, it was obvious that the city would focus the Rapid Transit routes mainly from south to north and vice versa, and that the line would have to expand as practically from one end of the island to the other.

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        In 1895, the city authorized the Rapid Transit Board. This proposal stated that the routes were to extend from Broadway below 34th Street to the Battery, and widen only to 185th Street on the west side of the city and 146th Street on the east. However, because of the immense cost of construction under Broadway, the Supreme Court passed a law that prohibited this plan. To conform the Court, the Commission proposed the “Elm Street Route” and eventually the Brooklyn Extension, which then made it possible to build routes starting from the City Hall, and Brooklyn Bridge Terminal to Grand Central Plaza at ...

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