Minnesota Administrative Rules

4715.2560 STACK VENTING.

A group of fixtures consisting of one bathroom group and a kitchen sink or combination fixture may be installed without individual fixture vents at the uppermost branch interval of a stack, if each fixture drain connects independently to a stack at least three inches in diameter extended full size through the roof, and bathtub or shower stall drain enters the stack at or above the same level as the water closet drain, and in accordance with requirements in part 4715.2620, subpart 4. Where the trap arm distances are exceeded the fixtures must be revented. When a water closet discharges to a sanitary tee in the vertical position, and a bathtub or shower on the same floor level also discharges to the sanitary tee through a side inlet, the water closet vent must be at least three inches in size unless the bathtub or shower is revented.

Statutory Authority:

MS s 16B.59 to 16B.75; 326.37 to 326.45; 326B.101 to 326B.194; 326B.43 to 326B.49

History:

11 SR 1405; 23 SR 686; L 2007 c 140 art 4 s 61; art 6 s 15; art 13 s 4; L 2008 c 337 s 64

Published Electronically:

May 14, 2012