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Re: Additions to Existing Plumbing Systems (UPC)

G

Glennman CBO

Silver Member
Joined
Oct 20, 2009
Messages
441
Section 101.5.1, 2009 UPC deals with additions to existing plumbing systems, and states that existing plumbing systems are only required to be updated if the new addition would cause an unsafe, insanitary, or overloaded condition.

If someone were to add several new toilets and a couple of flushometer urinals to an existing system, causing the meter and supply line to the building to be undersized, would this be an example of an "overloaded condition"? Or, does "overloaded" only apply to the drainage system?

I have a designer that thinks that they do not need to update their meter and building supply line for a project. This is the section he quotes. I believe that the flushometer urinals will not work properly if the meter and supply is not adequate. The additional fixtures are more than double the existing count, and they will far exceed the values in Table 6-6.
 
i'd be inclined to take the ol' boy right back to 603.1, which states that "the water service pipe shall be sized to supply water to the structure in the quantities and at the pressures required in this code" if the existing is undersized for the proposed additions it must be upgraded otherwise the system wont work properly , qand may create an unsafe or unsanitary condition, you can also use 604.7 if you have to ( we're in the 06 ipc) may not be any help, but really, if it wont work properly, it needs to be upgraded
 
I don't have access to a UPC, but I would agree with codeworks, and you. Sound like there is a specific reference, and the general reference in Chapter 1. And, existing supply IS part of "plumbing systems". Thanks for trying.
 
If you do not have proper pressure the flushometer fixtures will not work properly, creating a potential health hazard.
 
mark handler said:
If you do not have proper pressure the flushometer fixtures will not work properly, creating a potential health hazard.
Click to expand...
:agree DP's try to make the client happy and some will promise the world for the job.
 
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