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
| Aug 11, 2010
Wisconsin becomes the first state to require BIM on public projects
As of July 1, the Wisconsin Division of State Facilities will require all state projects with a total budget of $5 million or more and all new construction with a budget of $2.5 million or more to have their designs begin with a Building Information Model. The new guidelines and standards require A/E services in a design-bid-build project delivery format to use BIM and 3D software from initial ...
| Aug 11, 2010
Opening night close for Kent State performing arts center
The curtain opens on the Tuscarawas Performing Arts Center at Kent State University in early 2010, giving the New Philadelphia, Ohio, school a 1,100-seat multipurpose theater. The team of Legat & Kingscott of Columbus, Ohio, and Schorr Architects of Dublin, Ohio, designed the 50,000-sf facility with a curving metal and glass façade to create a sense of movement and activity.
| Aug 11, 2010
Residence hall designed specifically for freshman
Hardin Construction Company's Austin, Texas, office is serving as GC for the $50 million freshman housing complex at the University of Houston. Designed by HADP Architecture, Austin, the seven-story, 300,000-sf facility will be located on the university's central campus and have 1,172 beds, residential advisor offices, a social lounge, a computer lab, multipurpose rooms, a fitness center, and a...
| Aug 11, 2010
News Briefs: GBCI begins testing for new LEED professional credentials... Architects rank durability over 'green' in product attributes... ABI falls slightly in April, but shows market improvement
News Briefs: GBCI begins testing for new LEED professional credentials... Architects rank durability over 'green' in product attributes... ABI falls slightly in April, but shows market improvement
| Aug 11, 2010
Luxury Hotel required faceted design
Goettsch Partners, Chicago, designed a new five-star, 214-room hotel for the King Abdullah Financial District (KAFD) in Riyadh, Saudi Arabia. The design-build project, with Saudi Oger Ltd. as contractor and Rayadah Investment Co. as developer, has a three-story podium supporting a 17-story glass tower with a nine-story opening that allows light to penetrate the mass of the building.
| Aug 11, 2010
Three Schools checking into L.A.'s Ambassador Hotel site
Pasadena-based Gonzalez Goodale Architects is designing three new schools for Los Angeles Unified School District's Central Wilshire District. The $400 million campus, located on the site of the former Ambassador Hotel, will house a K-5 elementary school, a middle school, a high school, a shared recreation facility (including soccer field, 25-meter swimming pool, two gymnasiums), and a new publ...
| Aug 11, 2010
New Jersey's high-tech landscaping facility
Designed to enhance the use of science and technology in Bergen County Special Services' landscaping programs, the new single-story facility at the technical school's Paramus campus will have 7,950 sf of classroom space, a 1,000-sf greenhouse (able to replicate different environments, such as rainforest, desert, forest, and tundra), and 5,000 sf of outside landscaping and gardening space.
| Aug 11, 2010
U.S. firm designing massive Taiwan project
MulvannyG2 Architecture is designing one of Taipei, Taiwan's largest urban redevelopment projects. The Bellevue, Wash., firm is working with developer The Global Team Group to create Aquapearl, a mixed-use complex that's part of the Taipei government's "Good Looking Taipei 2010" initiative to spur redevelopment of the city's Songjian District.
