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 | May 31, 2016
JLG Architects acquires Minneapolis-based Studio Five Architects
Led by Linda McCracken-Hunt, SFA is one of Minnesota’s oldest woman-owned architecture firms.
Building Team Awards | May 31, 2016
Gonzaga's new student center is a bustling social hub
Retail mall features, comfortable furniture, and floor-to-ceiling glass add vibrancy to the new John J. Hemmingson Center.
Building Team Awards | May 27, 2016
Big police academy trains thousands of New York's finest
The Police Training Academy in Queens, N.Y., consists of a 480,000-sf academic/administration building and a 240,000-sf physical training facility, linked by an aerial pedestrian bridge.
Building Team Awards | May 26, 2016
Cimpress office complex built during historically brutal Massachusetts winter
Lean construction techniques were used to build 275 Wyman Street during a winter that brought more than 100 inches of snow to suburban Boston.
Building Team Awards | May 25, 2016
New health center campus provides affordable care for thousands of Northern Californians
The 38,000-sf, two-level John & Susan Sobrato Campus in Palo Alto is expected to serve 25,000 patients a year by the end of the decade.
Architects | May 24, 2016
Lissoni Architettura’s NYC Aquatrium takes first place in New York City Waterfront Design competition
NYC Aquatrium was selected from among 178 proposals from 40 countries as the winner of Arch Out Loud’s NYC Aquarium & Public Waterfront design competition
Building Team Awards | May 24, 2016
Los Angeles bus depot squeezes the most from a tight site
The Building Team for the MTA Division 13 Bus Operations and Maintenance Facility fit 12 acres’ worth of programming in a multi-level structure on a 4.8-acre site.
Building Team Awards | May 23, 2016
'Greenest ballpark' proves a winner for St. Paul Saints
Solar arrays, a public art courtyard, and a picnic-friendly “park within a park" make the 7,210-seat CHS Field the first ballpark to meet Minnesota sustainable building standards.
Architects | May 20, 2016
NCARB survey indicates continued growth of U.S. architects
The number of U.S. architects surpassed 110,000 in 2015, a 2% increase from the previous year.
Multifamily Housing | May 19, 2016
Architect Jean Nouvel designs flood-resilient Monad Terrace in Miami Beach
A man-made lagoon with lush vegetation at the base of the complex is expected to adapt to climate change and rising sea levels.
