01 May '13, 11am

#Buildings must be suited to their climate. When they're not, problems can ensue. @GBAdvisor #moisturemanagement

#Buildings must be suited to their climate. When they're not, problems can ensue. @GBAdvisor #moisturemanagement

For example, the most common base temperature for heating is 65° F. If the temperature stays at 55° F for 24 hours, you've just accumulated 10 heating degree days (HDD The difference between the 24-hour average (daily) temperature and the base temperature for one year for each day that the average is below the base temperature. For heating degree days, the base is usually 65 degrees Fahrenheit. For example, if the average temperature for December 1, 2001 was 30 degrees Fahrenheit, then the number of heating degrees for that day was 35. ). It's the same for cooling degree days (CDD). The IECC uses 50° F for the cooling base temperature, so if the temperature is 90° F for 24 hours, you've got 40 CDD. For heating and cooling, you add up the total number of HDD or CDD for the whole year, and that tells you how hot, cold, or mild the climate is. (A great source of data for degr...

Full article: http://www.greenbuildingadvisor.com/blogs/dept/building-s...

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