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
| Nov 8, 2011
$11 million business incubator Florida Innovation Hub at the University of Florida completed by Charles Perry Partners, Inc.
The facility houses the UF Office of Technology Licensing, UF Tech Connect, other entities, and more than 30 startup technology tenants.
| Nov 8, 2011
Designer joins Holabird & Root
Clifton has been awarded numerous awards throughout her career, including two AIA Chicago Design Excellence Awards.
| Nov 4, 2011
Mortenson Construction builds its fifth wind facility In Illinois
Shady Oaks Wind Farm is under construction near Compton, Ill.
| Nov 4, 2011
CSI and ICC Evaluation Service agree to reference GreenFormat in ICC-ES Environmental Reports?
ICC-ES currently references CSI's MasterFormat and other formats in all of its evaluation reports. The MOU will add GreenFormat references.
| Nov 4, 2011
McCarthy completes construction of South Region High School No. 2 in Los Angeles
Despite rain delays and scope changes, the $96.7 million high school was completed nearly two-months ahead of schedule.
| Nov 4, 2011
Two Thornton Tomasetti projects win NCSEA’s 2011 Excellence in Structural Engineering Awards
Altra Sede Regione Lombardia and Bank of Oklahoma Center both recognized.
| Nov 3, 2011
GREC Architects announces opening of the Westin Abu Dhabi Golf Resort and Spa
The hotel was designed by GREC and an international team of consultants to enhance the offerings of the Abu Dhabi Golf Club without imposing upon the dramatic landscapes of the elite golf course.
| Nov 3, 2011
Hardin Construction tops out Orlando Embassy Suites
The project began in April 2011 and is expected to open in fall 2012.
| Nov 3, 2011
2012 Pritzker Architecture Prize Ceremony to be held in China
The tradition of moving the event to world sites of architectural significance was established to emphasize that the prize is international, the laureates having been chosen from 16 different nations to date.
| Nov 3, 2011
DMR Architects welcomes two new staff members
Siro Gonzalez joins the staff as junior graduate architect and Megan Byers joins the staff as marketing assistant.
