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 21, 2011
AIA Chicago & AIA Chicago Foundation 2011 Dubin Family Young Architect Award announced
The Dubin Family Young Architect Award is bestowed annually and recognizes excellence in ability and exceptional contributions by a Chicago architect between the ages of 25 and 39.
| Dec 21, 2011
Few silver linings for construction in 2012
On the brighter side, nearly half of respondents (49.7%) said their firms were in at least “good” financial health, and four-fifths (80.2%) said their companies would at least hold steady in revenue in 2012.
| Dec 21, 2011
Hoboken Terminal restoration complete
Restoration of ferry slips, expanded service to benefit commuters.
| Dec 21, 2011
BBI key to Philly high-rise renovation
The 200,000 sf building was recently outfitted with a new HVAC system and a state-of-the-art window retrofitting system.
| Dec 20, 2011
Gluckman Mayner Architects releases design for Syracuse law building
The design reflects an organizational clarity and professional sophistication that anticipates the user experience of students, faculty, and visitors alike.
| Dec 20, 2011
Research identifies most expensive U.S. commercial real estate markets
New York City, Washington, D.C. and San Mateo, Calif., rank highest in rents.
| Dec 20, 2011
Third annual Gingerbread Build-off winners announced
Nine awards were handed out acknowledging the most unique and creative gingerbread structures completed.
| Dec 20, 2011
BCA’s Best Practices in New Construction available online
This publicly available document is applicable to most building types and distills the long list of guidelines, and longer list of tasks, into easy-to-navigate activities that represent the ideal commissioning process.
| Dec 20, 2011
Aragon Construction leading build-out of foursquare office
The modern, minimalist build-out will have elements of the foursquare “badges” in different aspects of the space, using glass, steel, and vibrantly painted gypsum board.
| Dec 20, 2011
HOAR Construction opens Austin, Texas office
Major projects in central Texas spur firm’s growth.