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
Giants 400 | Feb 6, 2023
2022 Reconstruction Sector Giants: Top architecture, engineering, and construction firms in the U.S. building reconstruction and renovation sector
Gensler, Stantec, IPS, Alfa Tech, STO Building Group, and Turner Construction top BD+C's rankings of the nation's largest reconstruction sector architecture, engineering, and construction firms, as reported in the 2022 Giants 400 Report.
Giants 400 | Feb 6, 2023
2022 Transit Facility Giants: Top architecture, engineering, and construction firms in the U.S. transit facility sector
Walsh Group, Skanska USA, HDR, Perkins and Will, and AECOM top BD+C's rankings of the nation's largest transit facility sector architecture, engineering, and construction firms, as reported in the 2022 Giants 400 Report.
Giants 400 | Feb 6, 2023
2022 Telecommunications Facility Sector Giants: Top architecture, engineering, and construction firms in the U.S. telecommunications facility sector
AECOM, Alfa Tech, Kraus-Anderson, and Stantec head BD+C's rankings of the nation's largest telecommunications facility sector architecture, engineering, and construction firms, as reported in the 2022 Giants 400 Report.
Giants 400 | Feb 6, 2023
2022 Religious Sector Giants: Top architecture, engineering, and construction firms in the U.S. religious facility construction sector
HOK, Parkhill, KPFF, Shawmut Design and Construction, and Wiss, Janney, Elstner head BD+C's rankings of the nation's largest religious facility sector architecture, engineering, and construction firms, as reported in the 2022 Giants 400 Report.
Giants 400 | Feb 6, 2023
2022 Justice Facility Sector Giants: Top architecture, engineering, and construction firms in the U.S. justice facility/public safety sector
Stantec, DLR Group, Turner Construction, STO Building Group, AECOM, and Dewberry top BD+C's rankings of the nation's largest architecture, engineering, and construction firms for justice facility/public safety buildings work, including correctional facilities, fire stations, jails, police stations, and prisons, as reported in the 2022 Giants 400 Report.
Giants 400 | Feb 6, 2023
2022 Parking Structure Giants: Top architecture, engineering, and construction firms in the U.S. parking structure sector
Choate Parking Consultants, Walker Consultants, Kimley-Horn, PCL, and Balfour Beatty top BD+C's rankings of the nation's largest parking structure sector architecture, engineering, and construction firms, as reported in the 2022 Giants 400 Report.
Market Data | Feb 6, 2023
Nonresidential construction spending dips 0.5% in December 2022
National nonresidential construction spending decreased by 0.5% in December, according to an Associated Builders and Contractors analysis of data published today by the U.S. Census Bureau. On a seasonally adjusted annualized basis, nonresidential spending totaled $943.5 billion for the month.
Giants 400 | Feb 3, 2023
Top Workplace/Interior Fitout Architecture, Engineering, and Construction Firms for 2022
Gensler, Interior Architects, AECOM, STO Building Group, and CBRE top the ranking of the nation's largest workplace/interior fitout architecture, engineering, and construction firms, as reported in Building Design+Construction's 2022 Giants 400 Report.
Multifamily Housing | Feb 3, 2023
HUD unveils report to help multifamily housing developers overcome barriers to offsite construction
The U.S. Department of Housing and Urban Development, in partnership with the National Institute of Building Sciences and MOD X, has released the Offsite Construction for Housing: Research Roadmap, a strategic report that presents the key knowledge gaps and research needs to overcome the barriers and challenges to offsite construction.
Steel Buildings | Feb 3, 2023
Top 10 structural steel building projects for 2023
A Mies van der Rohe-designed art and architecture school at Indiana University and Morphosis Architects' Orange County Museum of Art in Costa Mesa, Calif., are among 10 projects to win IDEAS² Awards from the American Institute of Steel Construction.