Some of the more delectable shopping is found at food halls in the subbasements of major department stores.
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For instance, there is an 18-inch-deep gravel bed, sandwiched between two concrete slabs, under the buildings' subbasements.
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During construction of Chase Manhattan Bank's new headquarters on Liberty Street in Lower Manhattan — Nelson's brother David was the president — subbasements were set up to protect 15,000 people in case of an attack.
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A subbasement is a floor below the basement floor. In the homes where there is any type of basement mentioned above, such as a look-out basement, all of the volume of the subbasements from floor to ceiling are located well below ground. Therefore, subbasements have no windows nor an outside door. In the homes that have subbasements, all of the basement can be used as part of the main home where people relax and do recreational things, while all of the subbasement can be used for storage.
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Building a subbasement is more difficult, costly, and time-consuming than building a basement as the lowest floor. Subbasements are even more susceptible to flooding and water damage than basements and are therefore rare, except in dry climates and at higher elevations. Some famous landmarks contain subbasements. The subbasement of the US Capitol Building is used as storage and that in the White House is used to store guest items.
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There was very little seepage into the tunnels, a natural consequence of excavation in clay, but any water that did find its way in was quickly pumped up to the sewers above. Ventilation was natural, relying primarily on the piston effect of trains pushing through the tunnels to circulate the air. While buildings with deep subbasements could connect directly to the tunnel, connections to surface level and shallow basements were by elevator shafts. George W. Jackson, the contractor who built the tunnel system, received several patents related to building such shafts.
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This measurement is the most widely used and is used to define the rankings of the 100 Tallest Buildings in the World. # Highest Occupied Floor # Height to Top of Roof (omitted from criteria from November 2009 onwards) # Height to Tip The height- to-roof criterion was discontinued because relatively few modern tall buildings possess flat rooftops, making this criterion difficult to determine and measure. The CTBUH has further clarified their definitions of building height, including specific criteria concerning subbasements and ground level entrances (height measured from lowest, significant, open-air, pedestrian entrance rather than from a previously undefined "main entrance"), building completion (must be topped out both structurally and architecturally, fully clad, and able to be occupied), condition of the highest occupied floor (must be continuously used by people living or working and be conditioned, thus including observation decks, but not mechanical floors) and other aspects of tall buildings. The height is measured from the level of the lowest, significant, open-air, pedestrian entrance.
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There are some that are the same as the houses on Devonshire Road, plus others that have subbasement and some of those are double fronted. The houses that have subbasements and those on the South East of Swanscombe Road that also have them were built to make the most of the ditch that was there before the houses were built. The ditch is shown on some maps as a water feature before the houses were built, before that it would have been an open sewer connecting the four large houses on the estate to the sewer on Devonshire Road and out into the Thames. Annandale Road has a large block of flats and houses that are all 3 stories, and the houses in Brackley Terrace are much smaller 2 up 2 downs. In Brackley Road there are 5 different designs of houses, none of which match the surrounding roads. By 1975 houses in Cranbrook Road were worth £28,000. Just before the turn of the century in 1999, houses were selling for £300,000. It was 2011 when the first house was sold for a £1,000,000.
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