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
| Jan 6, 2015
Construction permits exceeded $2 billion in Minneapolis in 2014
Two major projects—a new stadium for the Minnesota Vikings NFL team and the city’s Downtown East redevelopment—accounted for about half of the total worth of the permits issued.
| Jan 6, 2015
Snøhetta unveils design proposal of the Barack Obama Presidential Center Library for the University of Hawaii
The plan by Snøhetta and WCIT Architecture features a building that appears square from the outside, but opens at one corner into a rounded courtyard with a pool, Dezeen reports.
| Jan 5, 2015
Another billionaire sports club owner plans to build a football stadium in Los Angeles
Kroenke Group is the latest in a series of high-profile investors that want to bring back pro football to the City of Lights.
| Jan 5, 2015
Beyond training: How locker rooms are becoming more like living rooms
Despite having common elements—lockers for personal gear and high-quality sound systems—the real challenge when designing locker rooms is creating a space that reflects the attitude of the team, writes SRG Partnership's Aaron Pleskac.
| Jan 2, 2015
Illustrations of classic architecture bring in the new year with style
New York-based designer Xinran Ma has illustrated a New Year's greeting card that assembles pieces of various brutalist and modernist architecture.
| Jan 2, 2015
Construction put in place enjoyed healthy gains in 2014
Construction consultant FMI foresees—with some caveats—continuing growth in the office, lodging, and manufacturing sectors. But funding uncertainties raise red flags in education and healthcare.
| Dec 30, 2014
A simplified arena concept for NBA’s Warriors creates interest
The Golden State Warriors, currently the team with the best record in the National Basketball Association, looks like it could finally get a new arena.
| Dec 30, 2014
The future of healthcare facilities: new products, changing delivery models, and strategic relationships
Healthcare continues to shift toward Madison Avenue and Silicon Valley as it revamps business practices to focus on consumerism and efficiency, writes CBRE Healthcare's Patrick Duke.
| Dec 29, 2014
High-strength aluminum footbridge designed to withstand deep-ocean movement, high wind speeds [BD+C's 2014 Great Solutions Report]
The metal’s flexibility makes the difference in an oil rig footbridge connecting platforms in the West Philippine Sea. The design solution was named a 2014 Great Solution by the editors of Building Design+Construction.
| Dec 29, 2014
HDR and Hill International to turn three floors of a jail into a modern, secure healthcare center [BD+C's 2014 Great Solutions Report]
By bringing healthcare services in house, Dallas County Jail will greatly minimize the security risk and added cost of transferring ill or injured prisoners to a nearby hospital. The project was named a 2014 Great Solution by the editors of Building Design+Construction.