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
Architects | Jan 13, 2016
‘Socially engaged’ architect Alejandro Aravena named 2016 Pritzker Architecture Prize Laureate
Known for his inventive social housing initiatives in his native Chile, Aravena epitomizes the revival of a more socially engaged architect, the Pritzker jury stated.
Architects | Jan 12, 2016
Dear Architecture: It's time to create a level field for female designers
If architecture took one moment to be introspective, it would discover appalling imbalances between the opportunities for women and men, as Perkins+Will's Vershaé Hite and Brittany Eaker-Kirkland wrote in an open letter.
Great Solutions | Jan 6, 2016
Shepley Bulfinch develops elegant design solution to address behavioral issues in emergency departments
ED scheme allows staff to isolate unruly patients and visitors in a secure area.
Market Data | Jan 5, 2016
Majority of AEC firms saw growth in 2015, remain optimistic for 2016: BD+C survey
By all indications, 2015 was another solid year for U.S. architecture, engineering, and construction firms.
Architects | Jan 5, 2016
Potential vs. credential: How men and women differ in career progress
Recent research suggests that women face yet another career impediment: the confidence gap.
Architects | Dec 17, 2015
Capturing utilization and activity data in the workplace
While utilization is an important metric to inform how frequently a space is used, it’s important to consider activity data.
Architects | Dec 17, 2015
Four winners named in NYC sidewalk shed competition
Firms in the Construction Shed Design Competition made designs that are simple to build and use readily-available materials.
Architects | Dec 16, 2015
Lohan Anderson to close, join Wight & Co.
Dirk Lohan, Floyd Anderson and eight others will be hired by the Illinois-based Wight & Co. next month.
Architects | Dec 16, 2015
Architects create commission for diversity advancement
The 20-member group will assess recent data, set a plan of action, and report on results to the AIA Board of Directors.
Architects | Dec 15, 2015
ULI names Lord Richard Rogers the 2015 J.C. Nichols Prize winner
Rogers, Founder of Rogers Stirk Harbour + Partners, works on projects that “shine a spotlight on the challenges that people in urban areas are facing."
