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 | Sep 8, 2015
RETAIL SECTOR GIANTS: Callison RTKL, PCL Construction, Jacobs among top retail sector AEC firms
BD+C's rankings of the nation's largest retail sector design and construction firms, as reported in the 2015 Giants 300 Report
BIM and Information Technology | Sep 7, 2015
The power of data: How AEC firms and owners are using analytics to transform design and construction
Case’s bldgs = data conference highlighted how collecting data about personal activities can inform design and extend the power of BIM/VDC.
Sponsored | Architects | Sep 4, 2015
Sydney-based Architectural Firm Dramatically Increases Productivity
ArchiOffice enables the firm to spend less time on managing projects by providing relevant information in one place.
Industrial Facilities | Sep 3, 2015
DATA CENTER SECTOR GIANTS: Fluor, Gensler, Holder Construction among top data center AEC firms
BD+C's rankings of the nation's largest data center sector design and construction firms, as reported in the 2015 Giants 300 Report
High-rise Construction | Sep 3, 2015
Rafael Viñoly's 'Walkie-Talkie' tower named U.K.'s worst new building
The curved, glass tower at 20 Fenchurch Street in London has been known to reflect intense heat onto the streets below (in one instance damaging a car) and cause severe wind gusts.
Airports | Aug 31, 2015
Surveys gauge users’ satisfaction with airports
Several surveys gauge passenger satisfaction with airports, as flyers and airlines weigh in on technology, security, and renovations.
Airports | Aug 31, 2015
Small and regional airports in a dogfight for survival
Small and regional airports are in a dogfight for survival. Airlines have either cut routes to non-hub markets, or don’t provide enough seating capacity to meet demand.
Airports | Aug 31, 2015
Airports expand rental car facilities to ease vehicular traffic at their terminals
AEC teams have found fertile ground in building or expanding consolidated rental car facilities, which are the No. 1 profit centers for most airports.
Airports | Aug 31, 2015
Experts discuss how airports can manage growth
In February 2015, engineering giant Arup conducted a “salon” in San Francisco on the future of aviation. This report provides an insight into their key findings.
Healthcare Facilities | Aug 28, 2015
Hospital construction/renovation guidelines promote sound control
The newly revised guidelines from the Facilities Guidelines Institute touch on six factors that affect a hospital’s soundscape.