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
AIA to Congress: Act now to jump start building sector of economy
Tampa-based architect, Mickey Jacob, FAIA, unveiled the American Institute of Architects’ (AIA) Rebuild & Renew plan for both short- and long-term economic recovery to the House Committee on Small Business at a hearing October 7th.
| Aug 11, 2010
National Intrepid Center of Excellence tops out at Walter Reed
SmithGroup and The Intrepid Fallen Heroes Fund (IFHF), a non-profit organization supporting the men and women of the United States Armed Forces and their families, celebrated the overall structural completion of the National Intrepid Center of Excellence (NICoE), an advanced facility dedicated to research, diagnosis and treatment of military personnel and veterans suffering from traumatic brain injury.
| Aug 11, 2010
Jacobs, HDR top BD+C's ranking of the nation's 100 largest institutional building design firms
A ranking of the Top 100 Institutional Design Firms based on Building Design+Construction's 2009 Giants 300 survey. For more Giants 300 rankings, visit http://www.BDCnetwork.com/Giants
| Aug 11, 2010
Walt Disney Family Museum planned in San Francisco
Construction is under way on a new museum dedicated to the man behind the Disney empire. Set to open this fall in San Francisco, the Walt Disney Family Museum will feature 10 galleries, starting with Disney's beginnings on a Missouri farm.
| Aug 11, 2010
SAFTI FIRST hires Tim Nass as National Sales Manager
SAFTI FIRST, a leading USA manufacturer of fire rated glazing and framing systems, is pleased to announce the addition of Tim Nass as National Sales Manager. In his new role, Tim will be working closely with architects and contract glaziers in selecting the appropriate and most economical fire rated glazing solution for their project. He will also be coordinating SAFTI FIRST’s extensive network of architectural representatives throughout the United States.
| Aug 11, 2010
NCARB welcomes new board of directors
The National Council of Architectural Registration Boards (NCARB) introduces its Board of Directors for FY10, who were installed during the culmination of the Council’s 90th Annual Meeting and Conference in Chicago.
| Aug 11, 2010
Berkebile wins $100K award for commitment to environment
Robert Berkebile, the founding principal of BNIM Architects and a founding member of the U.S. Green Building Council, has been selected to receive a $100,000 Heinz Award. The award honors his role in promoting green building design and for his commitment and action toward restoring social, economic, and environmental vitality to America’s communities through sustainable architecture and planning.
