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
| Jun 19, 2014
NCARB study: Architects getting licensed at younger age
A new report from NCARB shows that the median age of people at initial licensure is at a 10 year low.
| Jun 19, 2014
Singapore's 'Tree House' vertical gardens break Guinness World Record
The high-rise development will have a 24,638-sf vertical garden, breaking a Guinness World Record.
| Jun 18, 2014
Design tips for Alzheimer care facilities
A new white paper from the Alzheimer’s Foundation of America and Perkins Eastman details best design practices for residential care settings for individuals living with Alzheimer’s disease.
| Jun 18, 2014
BSB Design Reinforces Client-Focus Legacy With Recent Changes
His 26-plus year history with BSB Design paired with his client relations skills and operational and organizational acumen make Swift well-suited to perpetuate the legacy of founder Jack Bloodgood: That everyone deserves to live in a home designed by an architect.
| Jun 18, 2014
Largest Passive House structure in the U.S. to be built in Oregon
Orchards at Orenco, a 57-unit affordable housing complex in Hillsboro, Oregon, is the first of a three-phase, three-building complex.
| Jun 18, 2014
SOM's twisting tower wins design competition for Sweden's tallest skyscraper
The skyscraper, which will reach 230 meters and is named Polstjärnan, or "The Pole Star," is to be built in Gothenburg, Sweden.
| Jun 18, 2014
Study shows walkable urbanism has positive economic impact
Walkable communities have a higher GDP, greater wealth, and higher percentages of college grads, according to a new study by George Washington University.
| Jun 18, 2014
Ware Malcomb names Sorensen Engineering Regional Manager
New hire will oversee firm's civil engineering practice in Los Angeles, San Diego, and Irvine.
| Jun 18, 2014
JLG Architects hires 31 to keep up with 'shale gale' work
Construction boom fueled by 'shale gale' brings rapid growth to North Dakota firm.
| Jun 18, 2014
Arup uses 3D printing to fabricate one-of-a-kind structural steel components
The firm's research shows that 3D printing has the potential to reduce costs, cut waste, and slash the carbon footprint of the construction sector.