public water and thusly assist in reducing future costs for WPI. Rainfall on a 2,000 ft2 roof can collect as much as 55,000 gallons per year. The water recovered from a typical system could be used for several purposes including outdoor irrigation, cold water toilet flushing and clothes washing (those two subjected to local ordinances). WE Credit 2: Innovative Wastewater Technologies, can be achieved if more effective uses were designed for the rainwater harvesting techniques, as well as develop more economical waste treatment technologies which included adding a high-efficiency filtration system. WE Credit 3 was determined by calculating the amount of water used in a select few of the buildings fixtures including lavatories (public and private), showers (public and private) and faucets, but did not include water fountains or emergency showers. In order to determine the amount of water used on a typical day using a certain fixture (i.e. toilet) one must use the following calculation: Public toilets = Total number of fixtures*Estimated daily usage*Flow rate(GPF)*Duration To achieve one point the water use must be reduced by at least 20% and to obtain both points water use must be reduced by at least 30%. Energy and Atmosphere There were six different credit areas in the Energy and Atmosphere section of the LEED checklist for new construction. EA Credit 1: Optimize Energy Performance, can achieve anywhere between 2 and 10 points depending on how well their energy performance was compared to a similar building without anything helping it optimize energy (between 14-42% better).21 However, LEED had a prerequisite of minimum energy performance for all newly constructed buildings. One way on optimizing energy was the use of solar panels to the roof of the building. There were many advantages to solar energy, but one major disadvantage was the cost of installation, which was mainly due to the high cost of semi-conducting materials used in producing a panel. In order to figure out how many watts of solar power needed for 100% solar energy, this equation must be used:
public water and thusly assist in reducing future costs for WPI. Rainfall on a 2,000 ft2 roof can collect as much as 55,000 gallons per year. The water recovered from a typical system could be used for several purposes including outdoor irrigation, cold water toilet flushing and clothes washing (those two subjected to local ordinances). WE Credit 2: Innovative Wastewater Technologies, can be achieved if more effective uses were designed for the rainwater harvesting techniques, as well as develop more economical waste treatment technologies which included adding a high-efficiency filtration system. WE Credit 3 was determined by calculating the amount of water used in a select few of the buildings fixtures including lavatories (public and private), showers (public and private) and faucets, but did not include water fountains or emergency showers. In order to determine the amount of water used on a typical day using a certain fixture (i.e. toilet) one must use the following calculation: Public toilets = Total number of fixtures*Estimated daily usage*Flow rate(GPF)*Duration To achieve one point the water use must be reduced by at least 20% and to obtain both points water use must be reduced by at least 30%. Energy and Atmosphere There were six different credit areas in the Energy and Atmosphere section of the LEED checklist for new construction. EA Credit 1: Optimize Energy Performance, can achieve anywhere between 2 and 10 points depending on how well their energy performance was compared to a similar building without anything helping it optimize energy (between 14-42% better).21 However, LEED had a prerequisite of minimum energy performance for all newly constructed buildings. One way on optimizing energy was the use of solar panels to the roof of the building. There were many advantages to solar energy, but one major disadvantage was the cost of installation, which was mainly due to the high cost of semi-conducting materials used in producing a panel. In order to figure out how many watts of solar power needed for 100% solar energy, this equation must be used: