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
University Buildings | Oct 16, 2015
5 ways architecture defines the university brand
People gravitate to brands for many reasons. Campus architecture and landscape are fundamental influences on the college brand, writes Perkins+Will's David Damon.
Architects | Oct 13, 2015
Architects Foundation expands National Resilience Initiative
The group is launching a search for three more NRI members.
Architects | Oct 13, 2015
Santiago Calatrava wins the European Prize for Architecture
The award honors those who "forward the principles of European humanism."
Office Buildings | Oct 5, 2015
Renderings revealed for Apple's second 'spaceship': a curvy, lush office complex in Sunnyvale
The project has been dubbed as another “spaceship,” referencing the nickname for the loop-shaped Apple Campus under construction in Cupertino.
Airports | Oct 5, 2015
Perkins+Will selected to design Istanbul’s 'Airport City'
The mixed-use development will be adjacent to the Istanbul New Airport, which is currently under construction.
High-rise Construction | Oct 5, 2015
Zaha Hadid designs cylindrical office building with world’s tallest atrium
The 200-meter-high open space will cut the building in two.
Architects | Oct 2, 2015
Herzog & de Meuron unveils design for Vancouver Art Gallery expansion
The blocky, seven-story wood and concrete structure is wider in the middle and uppermost floors.
Airports | Sep 30, 2015
Takeoff! 5 ways high-flyin' airports are designing for rapid growth
Nimble designs, and technology that humanizes the passenger experience, are letting airports concentrate on providing service and generating revenue.
Contractors | Sep 30, 2015
FMI: Construction in place on track for sustained growth through 2016
FMI’s latest report singles out manufacturing, lodging, and office sectors as the drivers of nonresidential building activity and investment.
Reconstruction & Renovation | Sep 29, 2015
What went wrong? Diagnosing building envelope distress [AIA course]
With so many diverse components contributing to building envelope assemblies, it can be challenging to determine which of these myriad elements was the likely cause of a failure.