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 5, 2019
Arata Isozaki named 2019 Pritzker Architecture Prize Laureate
The Japanese architect, city planner, and theorist is known for his deep commitment to the “art of space” and transnational methodology.
Education Facilities | Feb 25, 2019
Fallingwater Institute’s summer residency programs have a new educational hub
Bohlin Cywinski Jackson designed the project.
Architects | Feb 14, 2019
Amazon will not build HQ2 in New York City
The tech giant walks away from a deal, succumbing to opposition over huge tax breaks.
Architects | Feb 12, 2019
The basics of building commissioning
As building system technology increases in complexity and sustainability remains at the forefront of design, the need for commissioning continues to rise. This is the first post in our series examining the basics, benefits and boundaries of building commissioning.
Architects | Jan 28, 2019
9 tech trends to track in 2019
Innovations in voice recognition, cognitive neuroscience, and biometrics are among the trending tech topics for 2019, according to CallisonRTKL's Kristin Tilley.
AEC Tech | Jan 9, 2019
Our robotic future: Assessing AI's impact on the AEC profession and the built environment
This is the first in a series by Lance Hosey, FAIA, on how automation is disrupting design and construction.
Architects | Dec 17, 2018
New toolkit helps architect achieve high-performance buildings
Architects can download a copy of the toolkit online.
Architects | Dec 13, 2018
Social media synergy: Revving up your AEC firm’s content engine
Design firms know that just having a website and a blog aren’t enough, but social media complicates how they communicate.
Architects | Dec 10, 2018
The art and science of drawing: Humanizing the design process with a bit of controlled mayhem
Hand drawing reveals a dimension beyond those available in a CAD drawing or digital rendering.
Architects | Dec 7, 2018
2019 AIA Gold Medal awarded to Lord Richard Rogers, Hon. FAIA
The Gold Medal honors an individual whose significant body of work has had a lasting influence on the theory and practice of architecture.