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
| Aug 15, 2016
Top 50 Sports Facility Architecture Firms
Populous, HKS, and HOK top Building Design+Construction’s annual ranking of the nation’s largest sports facility sector architecture and A/E firms, as reported in the 2016 Giants 300 Report.
| Aug 15, 2016
MILITARY GIANTS: Cross-laminated timber construction gets a salute from the Army
By privatizing the construction, renovation, operation, maintenance, and ownership of its hotels the Army expects to cut a 20-year timetable for repairs and replacement of its lodging down to eight years.
| Aug 15, 2016
Top 30 Military Architecture Firms
HDR, Clark Nexsen, and Guernsey top Building Design+Construction’s annual ranking of the nation’s largest military sector architecture and A/E firms, as reported in the 2016 Giants 300 Report.
| Aug 12, 2016
SCIENCE + TECHNOLOGY GIANTS: Incubator model is reimagining research and lab design
Interdisciplinary interaction is a common theme among many new science and technology offices.
| Aug 12, 2016
Top 40 Science + Technology Architecture Firms
Perkins+Will, HDR, and HOK top Building Design+Construction’s annual ranking of the nation’s largest science + technology sector architecture and A/E firms, as reported in the 2016 Giants 300 Report.
| Aug 12, 2016
OFFICE GIANTS: Technology is giving office workers the chance to play musical chairs
Technology is redefining how offices function and is particularly salient in the growing trend of "hoteling" and "hot seating" or "free addressing."
| Aug 12, 2016
Top 100 Office Architecture Firms
Gensler, HOK, and Perkins+Will top Building Design+Construction’s annual ranking of the nation’s largest office sector architecture and A/E firms, as reported in the 2016 Giants 300 Report.
| Aug 11, 2016
RETAIL GIANTS: Retailers and developers mix it up to stay relevant with shoppers
Retail is becoming closely aligned with entertainment, and malls that can be repositioned as lifestyle centers will have enhanced value.
| Aug 10, 2016
Top 90 Retail Architecture Firms
Gensler, GreenbergFarrow, and MG2 top Building Design+Construction’s annual ranking of the nation’s largest retail sector architecture and A/E firms, as reported in the 2016 Giants 300 Report.
| Aug 10, 2016
DATA CENTER GIANTS: Information overload is pushing the limits of mission-critical facilities
Streamlined design and delivery approaches for individual business enterprises and co-location facilities are being born out of the necessity to bring new capacity online as quickly as possible.