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 | Dec 3, 2020
2020 Office Sector Giants: Top architecture, engineering, and construction firms in the U.S. office building sector
Gensler, Jacobs, and STO Building Group head BD+C's rankings of the nation's largest office building sector architecture, engineering, and construction firms, as reported in the 2020 Giants 400 Report.
Giants 400 | Dec 3, 2020
2020 Hotel Sector Giants: Top architecture, engineering, and construction firms in the U.S. hospitality sector
Gensler, Jacobs, and Suffolk Construction top BD+C's rankings of the nation's largest hotel sector architecture, engineering, and construction firms, as reported in the 2020 Giants 400 Report.
Giants 400 | Dec 3, 2020
2020 Healthcare Sector Giants: Top architecture, engineering, and construction firms in the U.S. healthcare facilities sector
HDR, Jacobs, and Turner top BD+C's rankings of the nation's largest healthcare facilities sector architecture, engineering, and construction firms, as reported in the 2020 Giants 400 Report.
Giants 400 | Dec 3, 2020
2020 Government Sector Giants: Top architecture, engineering, and construction firms in the U.S. government buildings sector
HNTB, Jacobs, and Turner top BD+C's rankings of the nation's largest government sector architecture, engineering, and construction firms, as reported in the 2020 Giants 400 Report.
Giants 400 | Dec 3, 2020
2020 Cultural Facilities Giants: Top architecture, engineering, and construction firms in the U.S. cultural facilities sector
AECOM, Arup, and Populous head BD+C's rankings of the nation's largest cultural facilities sector architecture, engineering, and construction firms, as reported in the 2020 Giants 400 Report.
Giants 400 | Dec 2, 2020
2020 Retail Giants: Top architecture, engineering, and construction firms in the U.S. retail building sector
Gensler, Jacobs, and PCL Construction top BD+C's rankings of the nation's largest retail sector architecture, engineering, and construction firms, as reported in the 2020 Giants 400 Report.
Giants 400 | Dec 2, 2020
2020 University Giants: Top architecture, engineering, and construction firms in the higher education sector
Gensler, AECOM, and Turner Construction top BD+C's rankings of the nation's largest university sector architecture, engineering, and construction firms, as reported in the 2020 Giants 400 Report.
Giants 400 | Dec 2, 2020
2020 Multifamily Sector Giants: Top architecture, engineering, and construction firms in the U.S. multifamily building sector
Clark Group, Humphreys & Partners Architects, and Kimley-Horn head BD+C's rankings of the nation's largest multifamily building sector architecture, engineering, and construction firms, as reported in the 2020 Giants 400 Report.
Giants 400 | Dec 2, 2020
2020 Airport Sector Giants: Top architecture, engineering, and construction firms in the U.S. airport facilities sector
AECOM, Hensel Phelps, and PGAL top BD+C's rankings of the nation's largest airport sector architecture, engineering, and construction firms, as reported in the 2020 Giants 400 Report.
Giants 400 | Nov 29, 2020
Top 40 Engineering Architecture Firms for 2020
Jacobs, AECOM, and Kimley-Horn top the rankings of the nation's largest engineering architecture (EA) firms for nonresidential buildings and multifamily buildings work, as reported in Building Design+Construction's 2020 Giants 400 Report.