LOS ANGELES—There are so many factors involved in construction that it is not possible to detect any statistically significant difference between the cost of constructing green and non-green buildings, according to a new report, "The Cost of Green Building Revisited." The study is by Davis Langdon, an architectural cost management service. It is an update of a 2004 report, and arrives at essentially the same conclusions. Many project teams are building green buildings with little or no added cost, and with budgets within the cost range of nonsustainable buildings with similar programs.
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Natural ventilation has been promoted as a cure-all to reduce cost and energy consumption and to improve indoor air quality and occupant comfort.
The reality of natural ventilation, however, is more complicated.
A workshop discussing the design and performance of natural systems will be featured at ASHRAE’s IAQ 2007: Healthy and Sustainable Buildings conference, Baltimore Oct. 14-17.
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The year-to-date value of construction starts through June 2007, excluding residential contracts, was 19.7% higher than in the same period in 2006, according to Reed Construction Data. Nonresidential starts in June were 16% more than the previous highest-recorded monthly level, which occurred in November 2006. The largest gains in new contracts were for offices, stores, hotels, factories and hospitals.
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Click link above for information about a free apron from DuroDyne or visit www.durodyne.com or e-mail: durodyne@durodyne.com
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McQuay is the only manufacturer to offer an air-cooled chiller with a pump package above 200 tons. Offering three levels of efficiency, this chiller can meet the owner’s specific energy savings requirements: standard (which meets ASHRAE Standard 90.1), high and premium (both exceed Standard 90.1 with full load EERs up to 10.6).
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