Junior Science Refresher this is science magazine in india published this article page no 46 the pentagon was completed in 16 months. it was built on a swamp and on the area of the old washington airport. trucks hauled some 5.5 million cubic yards (4.2 million cubic meters) of junk and soil and dumped it in the marshes. the buildings foundation rests on 41492 concrete piles. the purchase of land cost $2.25 million (in 1943 dollars). the building itself cost c. $50 million or $83 million with outside facilities. the pentagon stands on 29 acres (=c. 120000 sq.m.). the center court alone occupies 5 acres (c. 20000 sq.m.). the heating and refrigeration plant and the sewage structure sprawl on 1 acre each (c. 4000 sq.m.). fifty miles (=80 kilometers) of access highways were especially constructed replete with 21 overpasses and bridges. the parking space is spread over 67 acres (c. 270000 sq.m.) and can accommodate up to 8800 vehicles. each wall of the pentagon is more than 920 feet long (=300 meters). it is almost 78 feet high (or a little short of 25 meters). it should have been higher but the planners wanted to preserve the view of the neighboring arlington national cemetery. there are almost 18 miles (c. 29 kilometers) of corridors in the building 131 stairways 19 escalators 13 elevators 672 fire hose cabinets 284 rest rooms (toilettes) 691 drinking fountains 4200 electric clocks with sockets for another 2800 16250 light fixtures (250 bulbs are replaced daily) 7754 windows and 7 acres of glass - or c. 29000 sq.m. more than 23000 people work in the pentagon junior science refresher magazine subscription.
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