Interpretation #8011
Published October 10, 2017
Original Request
- Code Version
- 2010
- Code
- PLUMBING
- Code Description
- Chapter
- 25
- Section
- P2503.5.1
- Topic
- Drainage and vent water test
Question
Is a 2 inch stack with 10 ft head of water any where in your waste system sufficient for a test or is there a specific location that it needs to be located?
Answer Published 10/10/2017 at 9:58 AM
Based on the wording of the question, the answer is no, per the code section cited. This section requires the section to be filled to a point not less than 10 ft above the highest fitting connection in that section, or to the highest point in the completed system. The size is not specified.
Commentary
The code does not specify the size or location of the fill stack, only that the system be filled with a 10 ft. head of water above the highest fitting to the point of overflow. Locating the fill stack near the high end of the system is good practice, because it allows more air to be purged from the system, making it easier to hold a test. However, this is not a code requirement.