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 2, 2020
Two ‘firsts’ for Sasaki and LEO A DALY
Following an industry trend, the firms hire chiefs of technology and sustainability, respectively.
Architects | Feb 26, 2020
Seven architects aim to design the “newsstand of the future”
The winning project will be created and presented during Milan Design Week 2020.
Architects | Feb 24, 2020
Design for educational equity
Can architecture not only shape lives, but contribute to a more equitable and just society for marginalized people?
AEC Tech | Feb 22, 2020
Investor interest in the built environment not quite as avid in 2019
Builtworlds’ annual list of venture deals led by workspace providers.
Modular Building | Feb 16, 2020
On the West Coast, prefab gains ground for speedier construction
Gensler has been working with component supplier Clark Pacific on several projects.
AEC Tech | Feb 13, 2020
Exclusive research: Download the final report for BD+C's Giants 300 Technology and Innovation Study
This survey of 130 of the nation's largest architecture, engineering, and construction firms tracks the state of AEC technology adoption and innovation initiatives at the AEC Giants.
Office Buildings | Feb 11, 2020
Forget Class A: The opportunity is with Class B and C office properties
There’s money to be made in rehabbing Class B and Class C office buildings, according to a new ULI report.
Architects | Feb 6, 2020
NBBJ acquires immersive technology design studio ESI Design
NBBJ has acquired experience design studio ESI Design. The acquisition signals a new era where buildings will be transformed into immersive and interactive digital experiences that engage and delight.
Sponsored | HVAC | Feb 3, 2020
Reliable Building Systems Increase Net Operating Income by Retaining Tenants
Tenants increasingly expect a well-crafted property that feels unique, authentic, and comfortable—with technologically advanced systems and spaces that optimize performance and encourage collaboration and engagement. The following guidance will help owners and property managers keep tenants happy.
Architects | Jan 29, 2020
Frank Lloyd Wright’s architecture school is closing
The school was established in 1932.
