TITLE 77: PUBLIC HEALTH
PART 890 ILLINOIS PLUMBING CODE
CHAPTER I: DEPARTMENT OF PUBLIC HEALTH
SECTION 890.1560 MAIN VENTS TO CONNECT AT BASE
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Section 890.1560  Main Vents to Connect at Base

 

Main Vents.  All main vents or vent stacks shall connect full size at their base to the building drain or to the main soil or waste pipe, at or below the lowest fixture branch.  All vent pipes shall extend undiminished in size through the roof to the outside atmosphere, or shall be reconnected with the main soil or waste vent.  (See Appendix K:  Illustration EE.)