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
Codes and Standards | Apr 6, 2015
Industry groups petition for change order reform on federal projects
Nine design and construction associations ask for assurance that funds available for additional work.
High-rise Construction | Apr 6, 2015
Melbourne tower will light up depending on weather
The tower will be illuminated by 164-foot-tall beams of LED light based on weather updates from the Bureau of Meteorology.
BIM and Information Technology | Apr 3, 2015
French startup develops drone camera that overlays video with 3D images
The new drones can capture video and overlay the shot results with 3D images and augmented reality remotely.
Libraries | Apr 2, 2015
6 award-winning libraries showcase next-gen design strategies
The new Cedar Rapids Public Library and the restored Slover Library in Norfolk, Va., are among six breakthrough projects honored with 2015 AIA/ALA Library Building Awards.
Contractors | Apr 1, 2015
ABC: Nonresidential construction spending flat in February
The Associated Builders and Contractors forecasts a robust nonresidential construction spending recovery in 2015, despite an underwhelming start.
Office Buildings | Apr 1, 2015
IBM's supercomputer Watson finds new home in Manhattan's Silicon Alley
The new headquarters for the former Jeopardy champ was conceived as a showcase for Watson’s capabilities, and as an inspirational workspace for Millennials and idea generators of all ages.
Sponsored | Fire and Life Safety | Apr 1, 2015
Radiant Heat: The Invisible Killer
Where there’s smoke, there’s fire. Where there’s fire, there’s the deadly threat of radiant heat.
Modular Building | Mar 31, 2015
Phoenix apartment complex will be made from recycled shipping containers
The eight-unit complex, called Containers on Grand, was inspired by the need for affordable and sustainable housing near the city's core.
Cultural Facilities | Mar 31, 2015
Pratt Institute to offer first-ever degree in placemaking
As part of its new Urban Placemaking and Management degree, Pratt will offer courses on topics such as "the history and theory of public space" and the "economics of place."
Architects | Mar 30, 2015
Q+A with Arthur Gensler, and advice from his new book
"Designers need to be trained to solve their clients’ problems through design while leading their own firms to become sustainable practices," says Gensler.