Louisiana Administrative Code › Title 51 - PUBLIC HEALTH-SANITARY CODE › Part XIV - Plumbing › Chapter 7 - Sanitary Drainage › Section XIV-723 - Fixture Units

Current through Register Vol. 50, No. 6, June 20, 2024
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 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.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.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 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.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 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.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).