Chapter General §101. Definitions [formerly paragraph 1: 001]


§721. Cleanout Clearances



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§721. Cleanout Clearances

A. Small Pipe. Cleanouts smaller than 3-inches shall be so installed that there is a clearance of not less than 12 inches (305 mm) for the purpose of rodding.

B. Large Pipe. Cleanouts on 3-inch or larger pipes shall be so located that there is a clearance of not less than 18 inches (457 mm) for the purpose of rodding.

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: Promulgated by the Department of Health and Hospitals, Office of Public Health, LR 38:2852 (November 2012).

§723. Fixture Units



A. Values for Fixtures. Fixture unit values as given in Table 723.A of this code below designate the relative load weight of different kinds of fixtures which shall be employed in estimating the total load carried by a soil or waste pipe and shall be used in connection with the tables of sizes for soil, waste, and vent pipes for which the permissible load is given in terms of fixture units.



Table 723.A

Fixture Units Per Fixture or Group

Fixture Type

Private

Public

Assembly

Minimum Size

of Trap (in)

Bathroom group consisting of a 1.6 GPF gravity tank, flushometer tank, or flushometer valve water closet, a small P.O. 1 1/4 lavatory, and a bathtub or shower or a combination bath/shower

6.0

7.0

9.0




Bathroom group consisting of a 1.6 GPF gravity tank, flushometer tank, or flushometer valve water closet, a large P.O. 1 1/2 lavatory, and a bathtub or shower or a combination bath/shower

7.0

8.0

10.0




Bathroom group consisting of a greater than 1.6 GPF gravity tank or flushometer valve water closet, a small P.O. 1 1/4 lavatory, and a bathtub or shower or a combination bath/shower

7.0

9.0

11.0




Bathroom group consisting of a greater than 1.6 GPF gravity tank or flushometer valve water closet, a large P.O. 1 1/2 lavatory, and a bathtub or shower or a combination bath/shower

8.0

10.0

12.0




Bathtub (with or without overhead shower) or whirlpool attachments (a showerhead over a bathtub or whirlpool bathtub attachments does not increase the fixture value)

2.0

2.0




2

Bidet

1.0







1 1/4

Bidet

2.0

2.0




1 1/2

Clothes Washer, domestic, standpipe

3.0

3.0

3.0

2

Clothes Washer, commercial, pumped waste




See §§723.B and 723.C of this code for methods of computing unit value of fixtures not listed in this table or for rating of devices with intermittent flows.




Clothes Washer, commercial, gravity waste




See §§723.B and 723.C of this code for methods of computing unit value of fixtures not listed in this table or for rating of devices with intermittent flows.




Combination sink and tray

3.0

3.0

3.0

1 1/2

Combination sink and tray with food disposal unit

4.0

4.0

4.0

Separate traps 1 1/2

Dental unit or cuspidor




1.0

1.0

1 1/4

Dental lavatory




1.0




1 1/4

Dishwashing machine, domestic (See §§723.B and 723.C of this code for methods of computing unit value of fixtures not listed in this table or for rating of devices with intermittent flows)

2.0

2.0

2.0

1 1/2

Dishwashing machine, commercial




See §§723.B and 723.C of this code for methods of computing unit value of fixtures not listed in this table or for rating of devices with intermittent flows




Drinking Fountain

0.5

0.5

1.0

1 1/4

Floor drains (Size of floor drain trap shall be determined by the area of the floor to be drained; therefore, for larger trap sizes, see Table 723.B of this code to determine the applicable fixture unit value. If the floor drain receives continuous or semi-continuous flows, utilize §723.C of this code to determine the fixture unit value)

1.0

2.0

2.0

2

Hub drains (When the hub drain is utilized as a direct or an indirect waste receptor for a fixture, any fixture unit value otherwise assigned to the particular fixture draining into the hub drain shall be used. If the hub drain receives continuous or semi-continuous flows, utilize §723.C of this code to determine the fixture unit value)

1.0

2.0

2.0

2

Kitchen sink, domestic

2.0

2.0




1 1/2

Kitchen sink, domestic with food waste grinder and/or dishwasher

3.0

3.0




1 1/2

Lavatory (Lavatories with 1 1/4 or 1 1/2-inch trap have the same load value; larger punch out (P.O.) plugs for the drain hole have greater flow rate)

1.0

1.0

1.0

Small P.O. 1 1/4

Lavatory (Lavatories with 1 1/4 or 1 1/2-inch trap have the same load value; larger punch out (P.O.) plugs for the drain hole have greater flow rate)

2.0

2.0

2.0

Large P.O. 1 1/2

Lavatory, barber, beauty parlor

2.0

2.0

2.0

1 1/2

Lavatory, surgeon's




2.0




1 1/2

Laundry tray (1 or 2 compartments)

2.0

2.0

2.0

1 1/2

Mobile/Manufactured Home, trailer trap

15.0







4

Shower stall, domestic

2.0

2.0

2.0

2

Showers (group) per head (See §§723.B and 723.C of this code for methods of computing unit value of fixtures not listed in this table or for rating of devices with intermittent flows)




3.0

4.0

3

Sinks

Bar, private, above grade

1.0







1 1/2

Clinical, 1.6 GPF




6.0

6.0

3

Clinical, greater than 1.6 GPF




8.0

8.0

3

Curbed Cleaning Facility




3.0

3.0

3

Floor, food service




4.0

4.0

2

Floor, bar service




2.0

2.0

2

Floor, other uses (See §§723.B and 723.C of this code for methods of computing unit value of fixtures not listed in this table or for rating of devices with intermittent flows)













Pot, scullery, etc. (See §§723.B and 723.C of this code for methods of computing unit value of fixtures not listed in this table or for rating of devices with intermittent flows)




4.0

4.0

1 1/2

Service (trap standard)




3.0

3.0

3

Service ("p" trap)




2.0

2.0

2

Surgeon's




3.0

3.0

1 1/2

Wash, (circular or multiple), normally used for hand washing, each set of faucets




2.0

3.0

Nominal 1 1/2

Wash, (circular or multiple), normally used for hand washing, no faucets (e.g., Superdome hand wash sinks in public toilet rooms)




2.0

3.0

Nominal 1 1/2

Travel Trailer, trailer trap

6.0







4

Urinals













Exposed trap

2.0

2.0

5.0

1 1/2

Pedestal, siphon jet, blowout,

greater than 1.0 GPF



6.0

8.0

10.0

Trap size shall be consistent with fixture type as defined in industry standards

Wall lip, integral trap, 1.0 GPF

2.0

2.0

5.0

Trap size shall be consistent with fixture type as defined in industry standards

Wall lip, integral trap, greater

than 1.0 GPF



2.0

2.0

6.0

Trap size shall be consistent with fixture type as defined in industry standards

Washout, greater than 1.0 GPF

2.0

4.0

6.0

Trap size shall be consistent with fixture type as defined in industry standards

Water Closets,













1.6 GPF Gravity Tank

3.0

4.0

6.0

Trap size shall be consistent with fixture type as defined in industry standards

1.6 GPF Flushometer Tank

3.0

4.0

6.0

Trap size shall be consistent with fixture type as defined in industry standards

1.6 GPF Flushometer Valve

3.0

4.0

6.0




greater than 1.6 GPF Gravity

Tank


4.0

6.0

8.0

Trap size shall be consistent with fixture type as defined in industry standards

greater than 1.6 GPF

Flushometer Valve



4.0

6.0

8.0

Trap size shall be consistent with fixture type as defined in industry standards

B. Fixtures Not Listed. Fixtures not listed in Table 723.A of this code above shall be estimated in accordance with Table 723.B of this code below.

Table 723.B

Fixtures Not Listed

Fixture Drain or Trap Size (in)

Fixture-Unit Value

1 1/4 and smaller

1

1 1/2

2

2

3

3

5

4

6

C. Values for Continuous Flow. For a continuous or semi continuous flow into a drainage system, such as from a pump, pump ejector, air conditioning equipment, or similar device, 2 fixture units shall be allowed for each gallon per minute (gpm) of flow (31.7 fixture units for each liter per second of flow).

D. Air Conditioning Units. The condensate or waste from an air conditioning unit shall be classified as a plumbing fixture only if connected to the plumbing system.

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: Promulgated by the Department of Health and Hospitals, Office of Public Health, LR 38:2852 (November 2012).

§725. Drainage System Sizing

A. Maximum Fixture Unit Load. The maximum number of fixture units that may be connected to a given size of building sewer, building drain, or horizontal branch of the building drain shall be determined using Table 725.A.1 of this code below. The maximum number of fixture units that may be connected to a given size vertical soil or waste stack, or a horizontal branch connecting to a vertical soil or waste stack, is given in Table 725.A.2 of this code.


Table 725.A.1

Building Drains and Sewers

Maximum Number of Fixture-Units that may be Connected to Any Portion of the Building Drain or the Building Sewer

(Includes branches of the building drain. The minimum size of any building drain serving a water closet shall be 3". No building sewer shall be less than 4 inches in size)



Diameter of Pipe (in.)

Fall in Inches Per Foot




1/16

1/8

1/4

1/2

2

-

-

21

26

3

-

20

(not over two water closets)



27

(not over two water closets)



36

(not over two water closets)



4

-

180

216

250

5

-

390

480

575

6

-

700

840

1,000

8

1,400

1,600

1,920

2,300

10

2,500

2,900

3,500

4,200

12

3,900

4,600

5,600

6,700

15

7,000

8,300

10,000

2,000



Table 725.A.2

Horizontal Fixture Branches and Stacks







Maximum Number of Fixture Units that May be Connected to:

Diameter of Pipe (in.)

(The minimum size of any branch or stack serving a water closet shall be 3")



Any Horizontal Fixture Branch

(Does not include branches of the building drain. 50 percent less for battery vented fixture branches, no size reduction permitted for battery vented branches throughout the entire branch length.)



One Stack of 3 Stories or 3 Intervals Maximum

More Than 3 Stories in Height










Total for Stack

Total at One Story or Branch Interval

1 1/4

1

2

2

1

1 1/2

3

4

8

2

2

6

10

24

6

3

20

(not over two water closets)



30

(not over six water closets)



60

(not over six water closets)



16

(not over two water closets)



4

160

240

500

90

5

360

540

1100

200

6

620

960

1900

350

8

1400

2200

3600

600

10

2500

3800

5600

1000

12

3900

6000

8400

1500

15

7000

---

---

---

B. Minimum Size of Soil and Waste Stacks. No soil or waste stack shall be smaller than the largest horizontal branch connected thereto except that a 4x3 water closet connection shall not be considered as a reduction in pipe size. The soil or waste stack shall run undiminished in size from its connection to the building drain to its connection to the stack vent.

C. Future Fixtures. When provision is made for the future installation of fixtures, those provided for shall be considered in determining the required sizes of drain pipes. Construction to provide for such future installation shall be terminated with a plugged fitting or fittings at the stack so as to form no dead end.

D. Underground Drainage Piping. Any portion of the drainage system installed underground or below a basement or cellar shall not be less than 2-inch diameter. In addition, any portion of the drainage system installed underground which is located upstream from a grease trap or grease interceptor as well as the underground horizontal branch receiving the discharge there from shall not be less than 3-inch diameter.

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: Promulgated by the Department of Health and Hospitals, Office of Public Health, LR 38:2854 (November 2012).



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