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
| Feb 17, 2014
SmithGroupJJR President and CEO Carl Roehling appointed to serve on the AIA/AGC Joint Committee
Carl Roehling, FAIA, LEED AP BD+C, president & CEO of SmithGroupJJR, has been appointed to serve on the Joint Committee of The American Institute of Architects (AIA) and The Associated General Contractors of America (AGC).
| Feb 17, 2014
Developer plans to 'crowdfund' extended stay hotel in Manhattan
Want to own a piece of Manhattan hotel real estate? Developer Rodrigo Nino is inviting individual investors to put up $100,000 each for his latest project, 17 John.
| Feb 17, 2014
Call for Entries: 17th annual Building Team Awards - Deadline Extended!
BD+C's Building Team Awards is the industry's only recognition program to honor projects that achieve excellence in both design/construction and collaboration of the AEC/O team. The deadline has been extended to March 14, 2014.
| Feb 17, 2014
GBI to Offer AIA Approved Course Free for 60 Days to Train New Green Globes Professionals
The Green Building Initiative™ (GBI) announced today that between Feb. 13 and April 15 it will provide free access to its online certification course for Green Globes Professionals™ (GGPs). GGPs help guide building projects in achieving Green Globes® ratings, awarded for environmentally-focused design and construction.
| Feb 14, 2014
ASHRAE, Green Grid team up on energy-efficiency guide for data centers
Vendor-neutral publication examines aspects of the popular power usage effectiveness (PUE) metric.
| Feb 14, 2014
Scrap tires used to boost masonry blocks at Missouri University of S&T
Research could lead to blocks that use waste material and have seismic and insulating benefits.
| Feb 14, 2014
Giant interactive pinwheel adds fun to museum exterior
The proposed design for the Santa Cruz Museum of Art and History features a 10-foot pinwheel that can be activated by passersby.
| Feb 14, 2014
First look: Kentucky's Rupp Arena to get re-clad as part of $310M makeover
Rupp Arena will get a 40-foot high glass façade and a new concourse, but will retain many of its iconic design elements.
| Feb 14, 2014
Must see: Developer stacks shipping containers atop grain silos to create student housing tower
Mill Junction will house up to 370 students and is supported by 50-year-old grain silos.
| Feb 14, 2014
The Technology Report 2014: Top tech tools and trends for AEC professionals
In this special five-part report, Building Design+Construction explores how Building Teams throughout the world are utilizing advanced robotics, 3D printers, drones, data-driven design, and breakthroughs in building information modeling to gain efficiencies and create better buildings.