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
Urban Planning | Apr 5, 2022
The art of master planning, with Mike Aziz of Cooper Robertson
Mike Aziz, AIA, LEED AP, Partner and Director of Urban Design with Cooper Robertson, discusses his firm's design for the redevelopment of a Connecticut town's riverfront.
Multifamily Housing | Apr 5, 2022
New Covenant House New York contains multiple services for youth in crisis
The new Covenant House New York, a crisis shelter for homeless youth in the Hell’s Kitchen neighborhood, provides a temporary home and multiple services for young people.
Sponsored | BD+C University Course | Apr 1, 2022
Video surveillance systems for multifamily housing projects
This introductory course provides detailed technical information and advice from security expert Michael Silva, CPP, on designing a video surveillance system for multifamily housing communities – apartments, condominiums, townhouses, or senior living communities. Technical advice on choosing the right type of cameras and optimizing the exterior lighting for their use is offered.
K-12 Schools | Apr 1, 2022
Charleston County’s award-winning career and technical education high school
BD+C Executive Editor Rob Cassidy talks with the team behind the award-winning Cooper River Center for Advanced Studies, a Career|Technical Education high school in Charleston County, S.C.
Modular Building | Mar 31, 2022
Rick Murdock’s dream multifamily housing factory
Modular housing leader Rick Murdock had a vision: Why not use robotic systems to automate the production of affordable modular housing? Now that vision is a reality.
Multifamily Housing | Mar 29, 2022
Here’s why the U.S. needs more ‘TOD’ housing
Transit-oriented developments help address the housing affordability issue that many cities and suburbs are facing.
Contractors | Mar 28, 2022
Amid supply chain woes, building teams employ extreme procurement measures
Project teams are looking to eliminate much of the guesswork around product availability and price inflation by employing early bulk-purchasing measures for entire building projects.
Reconstruction & Renovation | Mar 28, 2022
Is your firm a reconstruction sector giant?
Is your firm active in the U.S. building reconstruction, renovation, historic preservation, and adaptive reuse markets? We invite you to participate in BD+C's inaugural Reconstruction Market Research Report.
Legislation | Mar 28, 2022
LEED Platinum office tower faces millions in fines due to New York’s Local Law 97
One Bryant Park, also known as the Bank of America Tower, in Manhattan faces an estimated $2.4 million in annual fines when New York City’s York’s Local Law 97 goes into effect.
Healthcare Facilities | Mar 25, 2022
Health group converts bank building to drive-thru clinic
Edward-Elmhurst Health and JTS Architects had to get creative when turning an American Chartered Bank into a drive-thru clinic for outpatient testing and vaccinations.