Minnesota Administrative Rules

4715.2655 ISLAND FIXTURE VENTING.

Traps for island sinks and similar equipment may be vented, when structural conditions preclude the use of conventional vents, by extending the vent as high as possible under the sink enclosure and then returning it downward and connecting it to the horizontal drain through a wye branch fitting downstream from the vertical fixture drain. In addition, a horizontal vent must be taken off the vertical section of the fixture vent by means of a wye branch fitting and extended to the partition where it can be extended vertically to the open air or connected to another vent at least six inches above the flood level of the fixture served. Drainage fittings must be used on all sections of the vent below floor level and a minimum slope of one-fourth inch per foot to the drainage point shall be provided. Cleanouts must be provided on the vent piping.

Statutory Authority:

MS s 16B.59; 16B.61; 16B.64; 326.37; 326.40; 326B.101; 326B.106; 326B.13; 326B.43; 326B.46

History:

28 SR 146; L 2007 c 140 art 4 s 61; art 6 s 15; art 13 s 4

Published Electronically:

May 14, 2012