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 12, 2024
Popular Denver e-bike voucher program aids carbon reduction goals
Denver’s e-bike voucher program that helps citizens pay for e-bikes, a component of the city’s carbon reduction plan, has proven extremely popular with residents. Earlier this year, Denver’s effort to get residents to swap some motor vehicle trips for bike trips ran out of vouchers in less than 10 minutes after the program opened to online applications.
Laboratories | Apr 12, 2024
Life science construction completions will peak this year, then drop off substantially
There will be a record amount of construction completions in the U.S. life science market in 2024, followed by a dramatic drop in 2025, according to CBRE. In 2024, 21.3 million sf of life science space will be completed in the 13 largest U.S. markets. That’s up from 13.9 million sf last year and 5.6 million sf in 2022.
Multifamily Housing | Apr 12, 2024
Habitat starts leasing Cassidy on Canal, a new luxury rental high-rise in Chicago
New 33-story Class A rental tower, designed by SCB, will offer 343 rental units.
Student Housing | Apr 12, 2024
Construction begins on Auburn University’s new first-year residence hall
The new first-year residence hall along Auburn University's Haley Concourse.
K-12 Schools | Apr 11, 2024
Eric Dinges named CEO of PBK
Eric Dinges named CEO of PBK Architects, Houston.
Construction Costs | Apr 11, 2024
Construction materials prices increase 0.4% in March 2024
Construction input prices increased 0.4% in March compared to the previous month, according to an Associated Builders and Contractors analysis of the U.S. Bureau of Labor Statistics’ Producer Price Index data released today. Nonresidential construction input prices also increased 0.4% for the month.
Healthcare Facilities | Apr 11, 2024
The just cause in behavioral health design: Make it right
NAC Architecture shares strategies for approaching behavioral health design collaboratively and thoughtfully, rather than simply applying a set of blanket rules.
K-12 Schools | Apr 10, 2024
A San Antonio school will provide early childhood education to a traditionally under-resourced region
In San Antonio, Pre-K 4 SA, which provides preschool for 3- and 4-year-olds, and HOLT Group, which owns industrial and other companies, recently broke ground on an early childhood education: the South Education Center.
University Buildings | Apr 10, 2024
Columbia University to begin construction on New York City’s first all-electric academic research building
Columbia University will soon begin construction on New York City’s first all-electric academic research building. Designed by Kohn Pedersen Fox (KPF), the 80,700-sf building for the university’s Vagelos College of Physicians and Surgeons will provide eight floors of biomedical research and lab facilities as well as symposium and community engagement spaces.
K-12 Schools | Apr 10, 2024
Surprise, surprise: Students excel in modernized K-12 school buildings
Too many of the nation’s school districts are having to make it work with less-than-ideal educational facilities. But at what cost to student performance and staff satisfaction?
