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 27, 2011
Suffolk Construction celebrates raising of Boston Tea Party Ships & Museum cupola
Topping off ceremony held on 238th Anniversary of Boston Tea Party.
| Dec 27, 2011
State of the data center 2011
Advances in technology, an increased reliance on the Internet and social media as well as an increased focus on energy management initiatives have had a significant impact on the data center world.
| Dec 27, 2011
USGBC’s Center for Green Schools releases Best of Green Schools 2011
Recipient schools and regions from across the nation - from K-12 to higher education - were recognized for a variety of sustainable, cost-cutting measures, including energy conservation, record numbers of LEED certified buildings and collaborative platforms and policies to green U.S. school infrastructure.
| Dec 21, 2011
DOE report details finance options for PV systems in schools
The report examines the two primary types of ownership models used to obtain PV installations for school administrators to use in selecting the best option for deploying solar technologies in their districts.
| 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.
