Skyscrapers and Environment
[size=3][color=#29384e][font=Times New Roman]In the late 1960[/font][font=宋体]‘’[/font][font=Times New Roman]s[/font][font=宋体]，[/font][font=Times New Roman] many people in North America turned their attention to environmental problems[/font][font=宋体]，[/font][font=Times New Roman] and new steel-and-glass skyscrapers were widely criticized. Ecologists pointed out that a cluster of tall buildings in a city often overburdens public transportation and parking lot capacities.[/font][/color][/size][size=3][color=#29384e][font=Times New Roman] [/font][/color][/size]
[size=3][color=#29384e][font=宋体] [/font][font=Times New Roman]Skyscrapers are also lavish consumers[/font][font=宋体]，[/font][font=Times New Roman] and wasters[/font][font=宋体]，[/font][font=Times New Roman] of electric power. In one recent year[/font][font=宋体]，[/font][font=Times New Roman] the addition of 17 million square feet of skyscraper office space in New York City raised the peak daily demand for electricity by 120[/font][font=宋体]，[/font][font=Times New Roman] 000 kilowatts-enough to supply the entire city of Albany[/font][font=宋体]，[/font][font=Times New Roman] New York[/font][font=宋体]，[/font][font=Times New Roman] for a day.[/font][/color][/size]
[size=3][color=#29384e][font=Times New Roman] [/font][/color][/size]
[size=3][color=#29384e][font=宋体] [/font][font=Times New Roman]Glass-walled skyscrapers can be especially wasteful. The heat loss [/font][font=宋体]（[/font][font=Times New Roman]or gain[/font][font=宋体]）[/font][font=Times New Roman]through a wall of half-inch plate glass is more than ten times that through a typical masonry wall filled with insulation board. To lessen the strain on heating and air-conditioning equipment[/font][font=宋体]，[/font][font=Times New Roman] builders of skyscrapers have begun to use double-glazed panels of glass[/font][font=宋体]，[/font][font=Times New Roman] and reflective glasses coated with silver or gold mirror films that reduce glare as well as heat gain. However[/font][font=宋体]，[/font][font=Times New Roman] mirror-walled skyscrapers raise the temperature of the surrounding air and affect neighboring buildings.[/font][/color][/size]
[size=3][color=#29384e][font=Times New Roman] [/font][/color][/size]
[color=#29384e][font=宋体][size=10.5pt] [/size][/font][size=10.5pt]Skyscrapers put a severe strain on a city[/size][font=宋体][size=10.5pt]‘’[/size][/font][size=10.5pt]s sanitation facilities[/size][font=宋体][size=10.5pt]，[/size][/font][size=10.5pt] too. If fully occupied[/size][font=宋体][size=10.5pt]，[/size][/font][size=10.5pt] the two World Trade Center towers in New York City would alone generate 2.25 million gallons of raw sewage each year-as much as a city the size of Stanford[/size][font=宋体][size=10.5pt]，[/size][/font][size=10.5pt] Connecticut [/size][font=宋体][size=10.5pt]，[/size][/font][size=10.5pt] which has a population of more than 109[/size][font=宋体][size=10.5pt]，[/size][/font][size=10.5pt] 000[/size][/color]
页:
[1]