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
Sustainability | Aug 4, 2022
To reduce disease and fight climate change, design buildings that breathe
Healthy air quality in buildings improves cognitive function and combats the spread of disease, but its implications for carbon reduction are perhaps the most important benefit.
Multifamily Housing | Aug 4, 2022
Faculty housing: A powerful recruitment tool for universities
Recruitment is a growing issue for employers located in areas with a diminishing inventory of affordable housing.
Multifamily Housing | Aug 3, 2022
7 tips for designing fitness studios in multifamily housing developments
Cortland’s Karl Smith, aka “Dr Fitness,” offers advice on how to design and operate new and renovated gyms in apartment communities.
Building Materials | Aug 3, 2022
Shawmut CEO Les Hiscoe on coping with a shaky supply chain in construction
BD+C's John Caulfield interviews Les Hiscoe, CEO of Shawmut Design and Construction, about how his firm keeps projects on schedule and budget in the face of shortages, delays, and price volatility.
Codes and Standards | Aug 3, 2022
Some climate models underestimate risk of future floods
Commonly used climate models may be significantly underestimating the risk of floods this century, according to a new study by Yale researchers.
| Aug 3, 2022
Designing learning environments to support the future of equitable health care
While the shortage of rural health care practitioners was a concern before the COVID-19 pandemic, the public health crisis has highlighted the importance of health equity in the United States and the desperate need for practitioners help meet the needs of patients in vulnerable rural communities.
Reconstruction & Renovation | Aug 3, 2022
Chicago proposes three options for Soldier Field renovation including domed stadium
The City of Chicago recently announced design concepts for renovations to Soldier Field, the home of the NFL’s Chicago Bears.
Codes and Standards | Aug 2, 2022
New tools help LEED projects reach health goals
The U.S. Green Building Council now offers tools to support the LEED Integrative Process for Health Promotion (IPHP) pilot credit.
Market Data | Aug 2, 2022
Nonresidential construction spending falls 0.5% in June, says ABC
National nonresidential construction spending was down by 0.5% in June, according to an Associated Builders and Contractors analysis of data published today by the U.S. Census Bureau.
K-12 Schools | Aug 1, 2022
Achieving a net-zero K-12 facility is a team effort
Designing a net-zero energy building is always a challenge, but renovating an existing school and applying for grants to make the project happen is another challenge entirely.