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
| Feb 10, 2014
Ball State to host Geothermal Conference on design, drilling and equipment - April 10, 2014
To best serve the industry, Ball State University has organized a single day conference in which participants will be able to exchange technical notes, develop understandings and share experiences with design, drilling, and equipment issues related to geothermal ground source heat pump technology.
| Feb 7, 2014
DOE, Autodesk team to overhaul the EnergyPlus simulation program
The update will allow a larger ecosystem of developers to contribute updates to the code in order to improve performance and decrease the time required to run energy model simulations.
| Feb 7, 2014
Meet the new Fellows: AIA elevates 143 to College of Fellows
The AIA College of Fellows is an honor awarded to members who have made significant contributions to the architectural profession.
| Feb 7, 2014
Bernards announces executive leadership realignment
Changes reflect long-term growth plans as builder enters its fifth decade.
| Feb 7, 2014
Zaha Hadid's 'white crystal' petroleum research center taking shape in the desert [slideshow]
Like a crystalline form still in the state of expansion, the King Abdullah Petroleum Studies and Research Center will rise from the desert in dramatic fashion, with a network of bright-white, six-sided cells combining to form an angular, shell-like façade.
| Feb 6, 2014
First look: Gensler ups the ante on airport design with new SFO boarding area
The new terminal features a yoga room, award-winning arts program, and an interactive play area for kids.
| Feb 6, 2014
End of the open workplace?
If you’ve been following news about workplace design in the popular media, you might believe that the open workplace has run its course. While there’s no shortage of bad open-plan workplaces, there are two big flaws with the now common claim that openness is bad.
| Feb 6, 2014
New Hampshire metal building awes visitors
Visitors to the Keene Family YMCA in New Hampshire are often surprised by what they encounter. Liz Coppola calls it the “wow factor.” “Literally, there’s jaw dropping,” says Coppola, director of financial and program development for the Keene Family YMCA.
| Feb 5, 2014
M&A activity down in 2013 among architecture, engineering firms: Report
In 2013, consultant Morrissey Goodale observed 168 sales of U.S.-based architecture and engineering (“A/E”) firms – down nearly 7% from the record 180 sales of U.S.-based A/E firms in 2012.
| Feb 5, 2014
BIA Opens Entries for 25th Annual Brick in Architecture Awards
Entries open on February 10 for the Brick Industry Association's (BIA) Brick in Architecture Awards. Celebrating its silver anniversary, BIA's annual honors spotlight outstanding, innovative and sustainable architecture that incorporates clay brick products as the predominant exterior building or paving material.
