1. A. In a one or two family dwelling only in which the waste stack or vent receives the discharge of a kitchen sink and also serves as a vent for fixtures connected to the horizontal portion of the branch served by the waste stack, the minimum size of the waste stack up to the highest sink branch connection shall be 2-inch diameter. Above that point the size of the stack shall be governed by the total number of fixture units vented by the stack.

   1. 1. Note: The requirement/allowance under §729.A of this code is only applicable if the requirement of §905.C.1 of this code has been satisfied elsewhere on the building drain. When the requirement of §905.C.1 of this code has not been satisfied elsewhere on the building drain, then the entire waste stack and vent mentioned in §729.A of this code shall be sized to conform to §905.C.1 of this code.

Authority Note

AUTHORITY NOTE: Promulgated in accordance with R.S. 40:4(A)(7) and R.S. 40:5(2)(3)(7)(9)(16)(17)(20).

Historical Note

HISTORICAL NOTE: Promulgated by the Department of Health and Hospitals, Office of Public Health, LR 38:2855 (November 2012).