La. Admin. Code tit. 51 § XIV-923
Current through Register Vol. 50, No. 11, November 20, 2024
Section XIV-923 - Individual Fixture ReventingA. Horizontal Branches. A horizontal waste branch meeting the following criteria shall effectively provide an exception to the need for a revent pipe(s). 1. Provided: a. the horizontal branch is full size throughout its length;b. each fixture drain enters the horizontal branch via a wye and 1/8th bend or a combination wye and 1/8th bend;c. the wastes are connected with a pitch of not more than 1/4 inch per foot (21 mm per meter);d. that a 2-inch "P" trap shall be the minimum for tubs and showers;e. the waste openings in the horizontal branch shall not be less than 1 1/4 inches for lavatories and 1 1/2 inches for a sink; and,f. that one drinking fountain shall be considered as one lavatory; then, without the use of reventing: i. one sink and one lavatory, or one tub, or one shower, or three lavatories within 8 feet (2438 mm) developed length of a main vented line may be installed on a 2-inch horizontal waste branch; or,ii. two lavatories within 5 feet (1524 mm) developed length of a main vented line may be installed on a 1 1/2-inch horizontal waste branch. Click Here To View Image
Figure 923.A
B. Where Required. All fixtures discharging downstream from a water closet shall be individually vented. Click Here To View Image
Figure 923.B - Required Individual Vents
C. Limits of Fixture Units Above Bathtubs and Water Closets. Up to a total of three fixture units may be placed on a soil or waste stack on floors above the highest water closet or bathtub connection without the use of a revent pipe(s) provided: 1. the soil or waste stack is not less than 3-inch diameter;2. the total fixture unit load on the stack does not exceed the limitations of Table 725.A.2 of this code;3. the largest fixture drain opening into the stack does not exceed the nominal diameter of the trap of the fixture to be connected except as permitted in §923. A of this code. Such opening for multiple fixture connections shall be limited to use on one floor only;4. each fixture above the highest tub or water closet is no farther from the stack than permitted in Table 913.A of this code; and,5. all fixtures on lower floors are vented as otherwise required by this Chapter.La. Admin. Code tit. 51, § XIV-923
Promulgated by the Department of Health and Hospitals, Office of Public Health, LR 38:2864 (November 2012).AUTHORITY NOTE: Promulgated in accordance with R.S. 40:4(A)(7) and R.S. 40:5(2)(3)(7)(9)(16)(17)(20).