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
Architects | Mar 10, 2015
German architect Frei Otto named 2015 Pritzker Architecture Prize laureate
The news comes a day after the visionary architect, 89, died in his native Germany.
Modular Building | Mar 10, 2015
Must see: 57-story modular skyscraper was completed in 19 days
After erecting the mega prefab tower in Changsha, China, modular builder BSB stated, “three floors in a day is China’s new normal.”
Sponsored | Metals | Mar 10, 2015
Metal Building Systems: A Rising Star in the Market
A new report by the Metal Building Manufacturer's Association explains the entity's efforts in refining and extending metal building systems as a construction choice.
Retail Centers | Mar 10, 2015
Retrofit projects give dying malls new purpose
Approximately one-third of the country’s 1,200 enclosed malls are dead or dying. The good news is that a sizable portion of that building stock is being repurposed.
Retail Centers | Mar 10, 2015
Orlando's Skyscraper to be world's tallest roller coaster
The Skyscraper is expected to begin construction later this year, and open in 2016. It will stand at 570 feet.
Museums | Mar 9, 2015
Architecture based on astronomy principles for new planetarium in Shanghai
The ancient Chinese civilization left some of the earliest records of humans studying the stars and skies. To exhibit this long history, a new planetarium and astronomy museum is planned for construction in Shanghai.
Architects | Mar 9, 2015
Study explores why high ceilings are popular
High ceilings give us a sense of freedom, new research finds
Cultural Facilities | Mar 9, 2015
London council nixes plans to rebuild the Crystal Palace
Plans for the new Crystal Palace Park were scrapped when the city and the project's developer could come to an agreement before the 16-month exclusivity contract expired.
Office Buildings | Mar 7, 2015
Chance encounters in workplace design: The winning ticket to the innovation lottery?
The logic behind the push to cultivate chance encounters supposes that innovation is akin to a lottery. But do chance encounters reliably and consistently yield anything of substance?
Architects | Mar 6, 2015
Study suggests our brains prefer curvy architecture
A research team at the University of Toronto at Scarborough worked with several European designers to see what sort of spaces pleases our brains more. Their finding: People are far more likely to call a room beautiful when its design is round instead of linear.