Quote:
Originally Posted by galleyfox
Most of Florida sits on top of limestone. It’s not the ocean that they’re blocking. The groundwater is going to rise up from beneath the city if the water has nowhere to drain. It’s also subtropical. Think about how long it took to drain New Orleans after Hurricane Katrina. You’d have to repeat that after every rainstorm in Florida during the wet season.
There is no solution apart from raising the city.
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Perhaps in the case of Miami it might be harder but Chicago raised itself up out of a swamp. Raising whole giant buildings and parts of entire blocks with incredibly mostly only screw jacks that have been around for thousands of years.
https://en.wikipedia.org/wiki/Jackscrew
There is evidence of the use of screws in the Ancient Roman world but it was the great Leonardo da Vinci in the late 1400’s who first demonstrated the use of a screw jack for lifting loads. https://www.china-reducers.com/screw...acks-Story.htm
Raising up skyscrapers are not likely possible but they could create a new first level from the second floor that one sees all over Venice.
The also reversed the flow of the Chicago river with massive canals and sent our sewage to St. Louis instead of the now pristine Lake Michigan.
https://en.wikipedia.org/wiki/Raising_of_Chicago
Raising of Chicago
During the 1850s and 1860s, engineers carried out a piecemeal raising of the level of central Chicago. Streets, sidewalks, and
buildings were physically raised on jackscrews. The work was funded by private property owners and public funds.
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During the 19th century, the elevation of the Chicago area was little higher than the shoreline of Lake Michigan, so for many years, there was little or no naturally occurring drainage from the city surface. The lack of drainage caused unpleasant living conditions, and standing water harbored pathogens that caused numerous epidemics including typhoid fever and dysentery, which blighted Chicago six years in a row, culminating in the 1854 outbreak of cholera that killed six percent of the city’s population.
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Workers then laid drains, covered and refinished roads and sidewalks with several feet of soil, and raised most buildings to the new grade.
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In January 1858, the first masonry building in Chicago to be thus raised—a four-story, 70-foot (21 m) long, 750-ton (680 metric tons) brick structure situated at the north-east corner of Randolph Street and Dearborn Street—was lifted on two hundred jackscrews to its new grade, which was 6 feet 2 inches (1.88 m) higher than the old one, “without the slightest injury to the building.”[8] It was the first of more than fifty comparably large masonry buildings to be raised that year...
In 1860 a consortium of no fewer than six engineers—including Brown, Hollingsworth and George Pullman—co-managed a project to raise half a city block on Lake Street, between Clark Street and LaSalle Street complete and in one go. This was a solid masonry row of shops, offices, printeries, etc., 320 feet (98 m) long, comprising brick and stone buildings, some four stories high, some five, having a footprint taking up almost one acre (4,000 m2) of space, and an estimated all in weight including hanging sidewalks of
thirty-five thousand tons.
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The following year a team led by Ely, Smith, and Pullman raised the Tremont House hotel on the south-east corner of Lake Street and Dearborn Street. This building was luxuriously appointed, was of brick construction, was six stories high, and had a footprint taking up over 1 acre (4,000 m2) of space. Once again business as usual was maintained as this large hotel ascended, and some of the guests staying there at the time—among whose number were several VIPs and a US Senator—
were oblivious to the process as five hundred men worked under covered trenches operating their five thousand jackscrews. One patron was puzzled to note that the front steps leading from the street into the hotel were becoming steeper every day and that when he checked out, the windows were several feet above his head, whereas before they had been at eye level. This hotel building, which until just the previous year had been the tallest building in Chicago, was raised 6 feet (1.8 m) without incident
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https://en.wikipedia.org/wiki/Raisin...iggs_house.jpg
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