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Oil-water separator

alaskajoe

Registered User
Joined
May 22, 2019
Messages
53
Location
Alaska
Are oil-water separators required in a residential garage with a floor drain?
If so where is it stated?
Drain just goes outside building
 
Up to the AHJ.... in WA, it comes from UPC Section 1009.

The IRC does not address this specific condition; therefore, I'd suggest that it is not prescriptive, and would thereby be subject to the IPC for those that use it.

2015 IPC - 1003.1 Where Required
Interceptors and separators shall be provided to prevent the discharge of oil, grease, sand and other substances harmful or hazardous to the public sewer, the private sewage system or the sewage treatment plant or processes.
 
Agree with Ty J
and the IRC spells it out

It is important to understand that the IRC contains coverage for what is conventional and common in residential construction practice. While the IRC will provide all of the needed coverage for most residential construction, it might not address construction practices and systems that are atypical or rarely encountered in the industry. Sections such as R301.1.3, R301.2.2.1.1, R320.1, M1301.1, G2401.1 and P2601.1 refer to other codes either as an alternative to the provisions of the IRC or where the IRC lacks coverage for a particular type of structure, design, system, appliance or method of construction. In other words, the IRC is meant to be all inclusive for typical residential construction and it relies on other codes only where alternatives are desired or where the code lacks coverage for the uncommon aspect of residential construction. Of course, the IRC constantly evolves to address new technologies and construction practices that were once uncommon, but are now common.
 
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