The Plumbing Efficiency Research Coalition is set to begin its long-anticipated Drainline Transport in Buildings study. The effort is aimed at determining if decreasing levels of water flow––caused by increasingly efficient plumbing fixtures––are sufficient to clear debris from plumbing pipes.
Essentially, plumbing experts have expressed concerns that the industry has reached a tipping point in terms of the ability of low-flow fixtures to adequately transport waste through drain lines, particularly in larger commercial systems with long horizontal runs to the sewer. Soon, they worry, end-users and professionals will avoid using more efficient products.
That, combined with the fact that such problems have been reported with low-flow plumbing systems in Europe and Australia, has raised many questions.
“I look forward to the results of the Drainline Transport study,” says David C. Smith, PE, plumbing and fire protection department manager, Bala Consulting Engineers, King of Prussia, Pa. “Logic states that less water in the waste stream will not carry the waste as far in the drainage piping.”
By analyzing the drainage issue from a standpoint of slope, flush volume, toilet design, and whether periodic surges of water into a building drain can help, researchers hope to come away with a more informed understanding of the issue.
David E. DeBord, CPD, LEED BD+C, ARCSA-AP, a Chicago-based plumbing and fire protection engineer, wonders if ultimately the industry will need to reduce the size of piping to maintain the minimum velocities required to assure proper scouring, and whether a 1/8-inch minimum pitch per foot of piping is still sufficient in this new world of low-flow plumbing systems.
PERC’s coalition members include the International Association of Plumbing & Mechanical Officials (IAPMO), Alliance for Water Efficiency (AWE), the American Society of Plumbing Engineers (ASPE), the International Code Council (ICC), Plumbing-Heating-Cooling Contractors (PHCC), and Plumbing Manufacturers International (PMI). The group’s impending research is scheduled to be conducted at an American Standard testing facility. +
Related Stories
| Mar 21, 2011
RATIO Architects announces merger with Cherry Huffman Architects
RATIO Architects, Inc. with studios in Indianapolis and Champaign, Ill., recently announced it has merged with prominent Raleigh, N.C., firm Cherry Huffman Architects.
| Mar 18, 2011
Universities will compete to build a campus on New York City land
New York City announced that it had received 18 expressions of interest in establishing a research center from universities and corporations around the world. Struggling to compete with Silicon Valley, Boston, and other high-tech hubs, officials charged with developing the city’s economy have identified several city-owned sites that might serve as a home for the research center for applied science and engineering that they hope to establish.
| Mar 17, 2011
Perkins Eastman launches The Green House prototype design package
Design and architecture firm Perkins Eastman is pleased to join The Green House project and NCB Capital Impact in announcing the launch of The Green House Prototype Design Package. The Prototype will help providers develop small home senior living communities with greater efficiency and cost savings—all to the standards of care developed by The Green House project.
| Mar 17, 2011
Hospitality industry turns to HTS Texas for ‘do not disturb’ air conditioned comfort
Large resort hotels and hospitality properties throughout the Southwest have been working with local contractors, engineers and HTS Texas for the latest innovations in quiet heating, ventilating and air conditioning (HVAC) equipment. The company has completed 12+ projects throughout Texas and the Southwestern U.S. over the past 18 to 24 months, and is currently working on six more hotel projects throughout the region.
| Mar 16, 2011
AIA offers assistance to Japan's Architects, U.S. agencies coordinating disaster relief
“Our hearts go out to the people of Japan as a result of this horrific earthquake and tsunami,” said Clark Manus, FAIA, 2011 President of the AIA. “We are in contact with our colleagues at AIA Japan and the Japan Institute of Architects to offer not only our condolences but our profession's technical and professional expertise when the initiative begins focusing on rebuilding."
| Mar 16, 2011
Are you working on a fantastic residence hall project? Want to tell us about it?
The feature story for the May 2011 issue of Building Design+Construction will focus on new trends in university residence hall design and construction, and we’re looking for great projects to report on and experts to interview. Projects can involve new construction or remodeling/reconstruction work, and can be recently completed, currently under construction, or still on the boards.
| Mar 16, 2011
Foster + Partners to design carbon-neutral urban park for West Kowloon Cultural District in Hong Kong
Foster + Partners has been selected by the board of the West Kowloon Cultural District Authority to design a massive 56-acre urban park on a reclaimed harbor-front site in Hong Kong. Designed as a carbon-neutral development, “City Park” will seamlessly blend into existing streets while creating large expanses of green space and seventeen new cultural venues.
| Mar 15, 2011
What Starbucks taught us about redesigning college campuses
Equating education with a cup of coffee might seem like a stretch, but your choice of college, much like your choice of coffee, says something about the ability of a brand to transform your day. When Perkins + Will was offered the chance to help re-think the learning spaces of Miami Dade College, we started by thinking about how our choice of morning coffee has changed over the years, and how we could apply those lessons to education.
| Mar 15, 2011
What will the architecture profession look like in 2025?
The global economy and the economic recession have greatly affected architecture firms' business practices. A Building Futures survey from the Royal Institute of British Architects looks at how these factors will have transformed the profession and offers a glimpse of future trends. Among the survey's suggestions: not only will architecture firms have to focus on a financial and business approach rather than predominantly design-led offices, but also company names are predicted to drop ‘architect’ altogether.
