What is the maximum length for a horizontal "foot" vent connection under UPC?

[Numerick]

In the illustration below, under UPC is there a Table or Code reference that can state what the allowable distance a horizontal foot vent can travel before entering a vertical vent stack? My distance is approximately +/- 15 feet, just wondering if this will work correctly.

 

[hj]

I do not know where you found that "Mickey Mouse" drawing, but as long as you have the REQUIRED cleanout in the vertical vent, the distance is somewhat irrelevant although logic would say that there HAS to be a wall nearby.

 

[Sponsor]

 

[Numerick]

HJ, the drawing came off of the Massachusetts Plumbing code website, reference: http://www.mass.gov/ocabr/licensee/.../rules-and-regs/248-cmr-1000-contd.html#10.16.

The closest wall for the vent is -/+ 12-13' from the drain.

 

[Asktom]

UPC again. The foot vent should come off the vertical (not horizonal as shown in your drawing) using a wye fitting immediately below the floor and extend to the nearest partition. The fittings need to be drainage fittings (wyes, 1/8 bends, LS 1/4s...). The foot vent also requires a cleanout either where it turns upward or on the vertical in the partition. If you search this site you will find pictures.

 

[WJcandee]

Page 13 of Bert Polk's guide has a nice photo of an island sink waste and vent arrangement.
Helpful Plumbing Hints for Residential Construction by Bert Polk Plumbing Inspector Lincoln County