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
| Dec 16, 2011
Goody Clancy-designed Informatics Building dedicated at Northern Kentucky University
The sustainable building solution, built for approximately $255-sf, features innovative materials and intelligent building systems that align with the mission of integration and collaboration.
| Dec 16, 2011
Stalco Construction converts Babylon, N.Y. Town Hall into history museum
The project converted the landmark structure listed on the National Register of Historic Places into the Town of Babylon History Museum at Old Town Hall.
| Dec 14, 2011
Belfer Research Building tops out in New York
Hundreds of construction trades people celebrate reaching the top of concrete structure for facility that will accelerate treatments and cures at world-renowned institution.
| Dec 14, 2011
Tyler Junior College and Sika Sarnafil team up to save energy
Tyler Junior College wanted a roofing system that wouldn’t need any attention for a long time.
| Dec 13, 2011
Lutron’s Commercial Experience Center awarded LEED Gold
LEED certification of the Lutron facility was based on a number of green design and construction features that positively impact the project itself and the broader community. These features include: optimization of energy performance through the use of lighting power, lighting controls and HVAC, plus the use of daylight.
| Dec 12, 2011
AIA Chicago announces Skidmore, Owings & Merrill as 2011 Firm of the Year
SOM has been a leader in the research and development of specialized technologies, new processes and innovative ideas, many of which have had a palpable and lasting impact on the design profession and the physical environment.
| Dec 12, 2011
Skanska to expand and renovate hospital in Georgia for $103 Million
The expansion includes a four-story, 17,500 square meters clinical services building and a five-story, 15,700 square meters, medical office building. Skanska will also renovate the main hospital.
| Dec 12, 2011
CRSI design awards deadline extended to December 31
The final deadline is extended until December 31st, with judging shortly thereafter at the World of Concrete.
