Using IAPMO’s Water Demand Calculator tool can result in energy, carbon, and water savings as compared to using traditional plumbing specification methods in plumbing codes, according to a study by Arup.
Arup compared the Water Demand Calculator with the Hunter’s Curve method that has been a long-time standard in both the Uniform Plumbing Code (UPC) and the International Plumbing Code (IPC) for sizing domestic hot water systems. The study examined four residential-use cases, including a single-family home, and six-unit, 45-unit, and high-rise multifamily residences.
Water savings ranged from 450 gallons to 71,000 gallons annually depending on the building size. High-rise residential buildings were found to have operational carbon savings between 73% and 84% for booster pumps and embodied carbon savings ranging from 20% to 41%.
IAPMO’s Water Demand Calculator predicts peak water demand for single-family and multifamily dwellings, removing the need for assigning fixture units to plumbing fixtures. Instead, the IAPMO tool calculates peak demand using algorithms based on building size.
Related Stories
| Jan 5, 2012
Minnesota's GreenStep Cities program aids communities in winning grants
GreenStep Cities, a Minnesota initiative, was designed to provide greater recognition to the state's communities for achievements in meeting sustainability standards and goals.
| Dec 15, 2011
Dayton, Ohio schools saving $2.6 million annually by building to LEED
On average, green schools save about $100,000 a year on operating costs, including energy and water savings.
| Dec 15, 2011
Building to LEED standards can pose new risks for construction workers
Workers on these projects suffer a 24% increase in falls to lower levels during roof work, which researchers attributed to the installation of solar panels, and a few other risks.
| Dec 15, 2011
NRDC charges Maine governor with weakening green wood requirement
The FSC program is administered through the Leadership in Energy and Environmental Design (LEED) and requires wood to be harvested in a sustainable way.
| Dec 15, 2011
Post-tornado, Tuscaloosa seeks to create walkable urban, retail areas
Block sizes initially were limited to a maximum perimeter of 1,750 feet, with no side of the block being longer than 500 feet.
| Dec 15, 2011
Allentown, Pa. city council asked to repeal union-friendly law
The mayor of Allentown, Pa. asked the City Council to repeal a year-old ordinance that forces contractors to hire union workers for large city projects funded with state and federal dollars.
| Dec 13, 2011
LEED-EB outpaces LEED for new construction
The U.S. Green Building Council's (USGBC's) LEED certifications for existing buildings standard is outpacing LEED for new buildings for the first time.
| Dec 13, 2011
Improved code requirements for attic ventilation
The Roof Assembly Ventilation Coalition (RAVC) participated in the development of the code.
| Dec 12, 2011
Improved Code Requirements for Attic Ventilation
The International Code Council (ICC) recently published the 2012 International Residential Code (IRC) that includes improved code requirements for balanced intake and exhaust for ventilated attics.
| Dec 12, 2011
DOE makes 2010 ASHRAE energy standard the reference for state energy codes
The U.S. Department of Energy (DOE) issued a ruling that establishes the 2010 American Society of Heating, Refrigerating and Air-Conditioning Engineers’ (ASHRAE’s) 2010 energy efficiency standard as the commercial building reference standard for state building energy codes.
