Although there are numerous anecdotal stories attributing drain-line problems to the use of 1.6-
gallon toilets (especially in cases where the drain line services only a single fixture), there is little
field data to support these claims. Several laboratory studies of "line carry" have been
completed, but most studies caution that the use of sponges, plastic balls, etc., may not accurately
simulate "real world" conditions.
The intent of this study was to provide science-based data on the effectiveness of popular toilet
models to transport solids to the sewer, i.e., drain-line carry. The study involved physically
measuring the effectiveness of several different types of ultra-low-flush (ULF) toilet flushing
systems to transport a realistic test media (soybean paste and toilet paper) along drain lines
installed at different slopes. There is a real need to identify if the installation of ULF toilets, especially in older
buildings, can lead to drain line problems, and therefore, flushing performance problems. This
project is intended to answer these questions, and thereby enable appropriate policy, code, and
economic decisions to be made.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 230 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 4 |
| Published : | 01/11/2004 |
