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
| Sep 7, 2014
Behind the scenes of integrated project delivery — successful tools and applications
The underlying variables and tools used to manage collaboration between teams is ultimately the driving for success with IPD, writes CBRE Healthcare's Megan Donham.
| Sep 7, 2014
Ranked: Top military sector AEC firms [2014 Giants 300 Report]
Balfour Beatty, Fluor, and HDR top BD+C's rankings of the nation's largest military sector design and construction firms, as reported in the 2014 Giants 300 Report.
| Sep 5, 2014
First Look: Zaha Hadid's Grace on Coronation towers in Australia
Zaha Hadid's latest project in Australia is a complex of three, tapered residential high-rises that have expansive grounds to provide the surrounding community unobstructed views and access to the town's waterfront.
| Sep 4, 2014
Ranked: Top courthouse sector AEC firms [2014 Giants 300 Report]
Fentress Architects, Tutor Perini, and AECOM top BD+C's rankings of design and construction firms with the most revenue from courthouse facilities, as reported in the 2014 Giants 300 Report.
| Sep 4, 2014
Hospital CEOs, architects sound off on state of healthcare design
Healthcare construction will continue to feel the effects of radical changes in the delivery of care, according to healthcare leaders attending the annual Summer Leadership Summit of the American College of Healthcare Architects and the AIA Academy of Architecture for Health.
| Sep 4, 2014
Best of education design: 11 projects win AIA CAE architecture awards [slideshow]
The CAE Design Excellence Award honors educational facilities that the jury believes should serve as an example of a superb place in which to learn. Projects range from a design school in Maryland to an elementary school in Washington.
Sponsored | | Sep 4, 2014
Learning by design: Steel curtain wall system blends two school campuses
In this the new facility, middle school and high school classroom wings flank either side of the auditorium and media center. A sleek, glass-and-steel curtain wall joins them together, creating an efficient, shared space. SPONSORED CONTENT
| Sep 4, 2014
Strong industry growth could be slowed by skilled labor shortage, says Gilbane report
While construction spending for 2014 will finish the year 5.5% higher than 2013 and the unemployment rate in construction is down to 7.5%, the industry has been losing workers for more than five years, according to a new Gilbane report.
| Sep 3, 2014
Ranked: Top local government sector AEC firms [2014 Giants 300 Report]
STV, HOK, and Turner top BD+C's rankings of the nation's largest local government design and construction firms, as reported in the 2014 Giants 300 Report.
| Sep 3, 2014
WSP to acquire Parsons Brinckerhoff in $1.35 billion deal
The deal, which has been approved by the boards of WSP and Balfour Beatty, has an enterprise value of $1.243 billion, plus another $110 million in cash retained by PB.