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PUBLIC UNISEX RESTROOM/ PRIVATE BATHROOM PRIVATE BATHROOM HALF BATHROOM , ~2-INCH LAVATORY I / DRY VENT 2-INCH (1 DFU)~ I (6 DFU) DRY VENT / 2-INCH MINIMUM 2-INCH ' (7 DFU) WET VENT 2-INCH MINIMUM START OF 'f START OF '-f DRY VENT WET VENT LAVATORY WET VENT I WET VENT j/ (S DFU) (1 DFU) ~ /APPROVED \ I ./ LAVATORY 'f DOUBLE- <j' \ I / (1 DFU) _/ FIXTURE END OF FITTING WATER _f WET VENT CLOSET (4 DFU) TUB/SHOWER DRAIN (2 DFU WATER CLOSET / WATER START OF L 2-INCH MINIMUM (3 DFU)~ CLOSET WET VENT WET VENT (3 DFU) A BATHROOM GROUP LOCATED ON THE SAME FLOOR LEVEL MAY BE VENTED BY A HORIZONTAL WET VENT - THE LENGTH OF THE TRAP ARM MUST NOT EXCEED THE LIMITS OF TABLE 1002.2. - THE WATER CLOSET FIXTURE DRAIN CONNECTION MUST BE DOWNSTREAM OF ALL FIXTURE DRAIN CONNECTIONS TO THE HORIZONTAL WET VENT. - ONLY ONE WET-VENTED FIXTURE DRAIN SHALL DISCHARGE UPSTREAM OF THE DRY-VENTED FIXTURE DRAIN CONNECTION . - ADDITIONAL FIXTURES MUST DISCHARGE DOWNSTREAM OF THE WET VENT SYSTEM AND THEY MUST BE CONVENTIONALLY VENTED . - THE DRY VENT MUST BE SIZED BASED ON THE TOTAL FIXTURE UNITS DISCHARGING INTO THE WET VENT. - THE WET VENT MUST BE SIZED BASED ON THE FIXTURE UNIT DISCHARGE INTO THE WET VENT. THE WET VENT MUST BE AT LEAST 2 INCHES IN SIZE FOR 4 DFU OR LESS, AND NOT LESS THAN 3 INCHES IN SIZE FOR 5 DFU OR MORE. DEPARTMENT OF LABOR AND INDUSTRY M.R. Chapter 4714, Section 908.2 12/20 Horizontal Wet Venting Telephone: (651) 284-5063 dli.mn.gov/business/plumbing-contractors/2015-minnesota-plumbing-code
