Plumbing fixtures, plumbing fixture trim, and plumbing appliances shall comply with the standards listed in Table 3.1.3. Plumbing supply fittings covered under the scope of NSF 61 shall comply with the requirements of NSF 61.
- Plumbing fixtures for accessible use and their installation shall conform to the requirements of Chapter 11 of the building subcode (N.J.A.C. 5:23-3.14).
- Exposed waste and water supply piping for accessible sinks and lavatories shall be covered with protectors or insulators that comply with ASME A112.18.9.
- The support and drain systems for adjustable sinks that facilitate accessible use shall comply with ASME A112.19.12.
Comment: Requirements for accessible plumbing fixtures are in ADA Standards for Accessible Design and ICC ANSI A117.1. Refer to local codes and regulations.
Plumbing fixtures, fixture trim, and plumbing appliances shall be installed in accordance with the requirements of this Code and the manufacturer's instructions and recommendations.
For other than accessible applications, minimum clearances between plumbing fixtures and from fixtures to adjacent walls shall be in accordance with Figure 7.3.2. The minimum clearances shall be the minimum open space between toilet partitions and between urinal screens where installed.
Figure 7.3.2
MINIMUM FIXTURE CLEARANCES (for other than accessible applications)
MINIMUM FIXTURE CLEARANCES (for other than accessible applications)
Plumbing fixtures shall be so installed as to provide access for cleaning the fixture and the surrounding area.
Floor-mounted fixtures shall be securely supported by the floor or floor/wall structure. No strain shall be transmitted to the connecting piping. Fastening screws or bolts shall be corrosion-resisting.
- Wall-hung water closets shall be supported by concealed metal carriers that transmit the entire weight of the fixture to the floor and place no strain on the wall or connecting piping. Supports of this design shall comply with ASME A112.6.1M.
- Supports for off-the-floor water closets with concealed tanks shall comply with ASME A112.6.2.
- Lavatories, urinals, and other wall-hung fixtures shall be supported by a concealed or exposed finished wall hanger plate or equivalent that transmits the weight of the fixture to the wall structure if adequate, or to the floor without placing strain on the piping. Such supports shall comply with ASME A112.6.1M. In addition to the wall support brackets, pedestals or legs may provide additional support for pedestal lavatories. See Figure 7.3.5
Figure 7.3.5
A CARRIER FOR A WALL HUNG WATER CLOSET
A CARRIER FOR A WALL HUNG WATER CLOSET
Where fixtures are supplied with both hot and cold water, the faucet(s) and supply piping shall be installed so that the hot water is controlled from the left side of the fixture or faucet when facing the controls during fixture use.
EXCEPTION: Single handle and single control valves for showers and bath/shower combinations where the hot and cold temperature orientation is marked on the fitting surface.
Where fixtures have drains with concealed slip joint connections or incorporate a cleanout plug, a means of access shall be provided for inspection and repair. Such access is not required for connections that are soldered, threaded, solvent cemented, or equivalently secured.
Comment: Access to concealed slip joints and cleanouts can require the use of tools.
Joints where fixtures contact walls and floors shall be caulked or otherwise made watertight. See Figure 7.3.8
Figure 7.3.8
SEALING FIXTURES TO WALLS AND FLOORS
SEALING FIXTURES TO WALLS AND FLOORS
- Vitreous and non-vitreous china water closets shall comply with ASME A112.19.2/CSA B45.1.
- Plastic water closets shall comply with CSA B45.5/IAPMO Z124.
- Stainless steel water closets shall comply with ASME A112.19.3/CSA B45.4.
- Dual-flush water closets shall comply with ASME A112.19.2/CSA B45.1 or CSA B45.5/IAPMO Z124 and with ASME A112.19.14.
- Personal hygiene devices shall comply with ASME A112.4.2/CSA B45.16.
- Single flush water closets, whether operated by flush tank, flushometer tank, or flushometer valve, shall be the low-consumption type having an average consumption of not more than 1.6 gallons per flush when tested in accordance with ASME A112.19.2/CSA B45.1 or CSA B45.5/IAPMO Z124.EXCEPTION: Blow-out water closets and clinical sinks.
- Six-liter dual flush water closets shall comply with ASME A112.19.14
Water closets shall have elongated bowls with open-front seats. See Figure 7.4.3
EXCEPTIONS:
- Water closets having closed-front seats and either round or elongated bowls are permitted in single dwelling units, apartments, condominiums, private office toilet rooms intended for the exclusive use of one individual, and in pre-school and kindergarten facilities.
- Closed-front seats are permitted in hotel and motel guest rooms.
- Closed-front seats that have automatic seat cover protection are permitted in lieu of open-front seats.
Figure 7.4.3
AN ADULT-HEIGHT ELONGATED WATER CLOSET BOWL COMPARED TO A ROUND BOWL
AN ADULT-HEIGHT ELONGATED WATER CLOSET BOWL COMPARED TO A ROUND BOWL
The height of water closet bowls shall be a minimum of 13-1/2" from the finished floor to the top of the rim.
EXCEPTION: Bowls intended for children's use (5 years and younger) are permitted to be 9-1/2" to 10-1/2" high to the rim and juvenile use (6-12 years) are permitted to be 10-1/2" to 13-1/2" high to the rim.
Seats for water closets shall be of smooth, non-absorbent materials, and be properly sized to fit the water closet bowl. Plastic toilet seats shall comply with IAPMO/ANSI Z124.5.
EXCEPTION: Water closet seats in single dwelling units are not required to comply with IAPMO/ANSI Z124.5.
Water closets in hotels, motels, dormitories, boarding houses and similar occupancies shall be the elongated type with open-front seats.
EXCEPTIONS:
- Closed-front seats shall be permitted in hotel and motel guest rooms.
- Closed-front seats that are provided with automatic seat cover protection.
Water closets not having a visible trap seal or having either unventilated spaces or walls that are not washed at each discharge shall be prohibited.
Water closets with pumps shall comply with ASME A112.3.4/CSA B45.9.
Bidet seats for water closets shall comply with Section 7.4.5 for water closet seats. They shall include the sprays and water controls required by a bidet. They shall comply with ASME A112.4.2/CSA B45.16 for water closet personal hygiene devices, including an equipment-mounted atmospheric vacuum breaker with 1" minimum critical level in accordance with ASSE 1001 or CSA B64.1.1 for high hazards.
Bidet attachments for installation under the seat of a water closet shall include the sprays and water controls required by a bidet. They shall comply with ASME A112.4.2/CSA B45.16 for water closet personal hygiene devices, including an equipment-mounted atmospheric vacuum breaker with 1" minimum critical level in accordance with ASSE 1001 or CSA B64.1.1 for high hazards.
- Water-fed vitreous and non-vitreous china urinals shall comply with ASME A112.19.2/CSA B45.1.
- Non-water vitreous china urinals shall comply with ASME A112.19.19.
- Plastic urinals shall comply with CSA B45.5/IAPMO Z124.
- Non-water urinals shall have a liquid trap seal as required by Section 5.3.2.
- Water-fed urinals with liquid trap seals that are not visible in the bowl shall be supplied by an automatic flushing device.
Water-fed urinals shall be the low-consumption type having an average water consumption of not more than 1.0 gallon per flush when tested in accordance with ASME A112.19.2/CSA B45.1 or CSA B45.5/IAPMO Z124.
Urinals shall not be installed where wall and floor surfaces are not waterproof and do not have a smooth, readily cleanable, non-absorbent surface. Refer to the International Building Code, Section 1209.2.2.
Trough urinals and urinals having walls that are not washed at each discharge shall be prohibited.
EXCEPTION: Non-water urinals.
- Non-water urinals shall not be installed in facilities that do not have provisions for necessary maintenance.
- Drain piping shall be sloped not less than 1/4 inch per foot to the point where it connects to piping with drainage from one or more water closets.
- Drain piping from non-water urinals shall not be copper to the point where it connects to piping with drainage from one or more water closets.
- Lavatories shall comply with the following standards:
- Vitreous and non-vitreous china; ASME A112.19.2/CSA B45.1.
- Enameled cast-iron; ASME A112.19.1/CSA B45.2.
- Enameled steel; ASME A112.19.1/CSA B45.2.
- Plastic; CSA B45.5/IAPMO Z124.
- Stainless steel; ASME A112.19.3/CSA B45.4.
- Except as required under Section 7.6.2.c, lavatory faucets shall be designed and manufactured so that they will not exceed a water flow rate of 2.2 gallons per minute when tested in accordance with ASME A112.18.1/CSA B125.1.
- Public lavatory faucets, other than the metering type, shall be designed and manufactured according to ASME A112.18.1/CSA B125.1.
- Self-closing or self-closing/metering faucets shall be installed on lavatories intended to serve the transient public, such as those in, but not limited to, service stations, train stations, airport terminals, restaurants, and convention halls. Metering faucets shall deliver not more than 0.25 gallon of water per use when tested in accordance with ASME A112.18.1/CSA B125.1. Self-closing faucets shall be designed and manufactured so that they will not exceed a water flow rate of 0.5 gallon per minute when tested in accordance with ASME A112.18.1/CSA B125.1.
The waste outlet pipe on individual lavatories shall be not less than 1-1/4" nominal size. A strainer, pop-up stopper, crossbar grid, or other device shall be provided to protect the waste outlet.
Where lavatories include an integral overflow drain, the waste fitting shall be designed and installed so that standing water in the bowl of the fixture cannot rise in the overflow channel when the drain is closed, nor shall any water remain in the overflow channel when the bowl is empty. The overflow shall drain to the inlet side of the fixture trap. See Figure 7.6.4
Comment: Overflows are not provided in all lavatories. Lavatories with overflows are not used in hospitals because of the potentially unsanitary condition caused by inaccessible surfaces exposed to waste.
Figure 7.6.4
A LAVORATORY OVERFLOW
A LAVORATORY OVERFLOW
- Circular and semi-circular wash fountains and wall-mounted and free-standing wash sinks shall comply with the requirement of Section 7.6. Mixed water temperature control shall comply with Section 10.15.6.
- The water supply to wash fountains shall not exceed 0.75 gpm for each of the rated number of users. The rated number of users for wash fountains shall be as specified by the manufacturer but shall not be more than one person per 18-inches of usable length of the rim having an available water spray.
- The faucets for wash sinks shall comply with Section 7.6.2 for lavatories. The rated number of users for wash sinks shall equal the number of faucets.
The control of mixed water temperature for public-use hand washing facilities shall comply with Section 10.15.6.
Where group-type wash fountains or wash sinks are used to satisfy the number of lavatories required by Section 7.21.1, each rated user position shall be considered as the equivalent of one lavatory. See Figure 7.6.7
Figure 7.6.7
A CIRCULAR WASH FOUNTAIN
A CIRCULAR WASH FOUNTAIN
- Bidets shall comply with ASME A112.19.2/CSA B45.1.
- Bidet supply fittings shall comply with ASME A112.18.1/CSA B125.1.
- Supply fittings for bidets with a below-the-rim spray nozzle or integral flushing rim shall include an atmospheric vacuum breaker with a 1" minimum critical level complying with ASSE 1001 or CSA B64.1.1 for deck-mounted devices.
- Over-the-rim bidet supply fittings shall provide the air gap required by Section 10.5.2.
Where bidets include an integral overflow drain, the waste fitting shall be designed and installed so that standing water in the bowl of the fixture cannot rise in the overflow channel when the drain is closed, nor shall any water remain in the overflow channel when the bowl is empty. The overflow shall drain to the inlet side of the fixture trap.
The control of mixed water temperature for bidets shall comply with Section 10.15.6.
- Bathtubs shall comply with the following standards:
- Plastic, cultured marble and other synthetic products or finishes; CSA B45.5/IAPMO Z124
- Enameled cast-iron; ASME A112.19.1/CSA B45.2
- Enameled steel; ASME A112.19.1/CSA B45.2
- Vitreous and non-vitreous china; ASME A112.19.2/CSA B45.1
- Bathtubs with pressure sealed doors; ASME A112.19.15
Bathtubs and combination bath/showers shall have waste outlet and overflow pipes not less than 1-1/2" nominal size. Waste outlets shall be equipped with a pop-up waste, chain and stopper, or similar type of drain plug. See Figure 7.8.2
Figure 7.8.2
A BATHTUB WASTE AND OVERFLOW
A BATHTUB WASTE AND OVERFLOW
- Shower heads, including the hand-held type, shall be designed and manufactured so that they will not exceed a water supply flow rate of 2.5 gallons per minute when tested in accordance with ASME A112.18.1/CSA B125.1.
- The control of mixed water temperatures to bath/shower combinations shall comply with Section 10.15.6.
- Surrounding wall construction shall be in accordance with Sections 7.10.5.d and 7.10.5.e.
- Riser pipes to shower heads shall be secured in accordance with Section 7.10.7.
- Combination bath/showers can have two 2.5 gpm shower heads with a 1-1/2" drain in accordance with Section 7.10.4.b
Unless equipped with an ASSE 1001 atmospheric vacuum breaker, there shall be an air gap between the outlet of the bath spout and the flood level rim of the tub that complies with Section 10.5.2 and Table 10.5.2.
The control of mixed water temperature for bathtubs shall comply with Section 10.15.6.
The requirements of Section 7.8 for bathtubs shall also apply to whirlpool baths. The provisions for wet venting bathroom groups in Section 12.10.3 shall also apply with whirlpool baths.
Whirlpool bathtubs and their suction fittings shall comply with ASME A112.19.7/CSA B45.10
The arrangements of circulating piping and pumps shall not be altered in any way that would prevent the pump and associated piping from draining after each use of the fixture.
One or more removable panels shall be provided where required for access to pumps, heaters, and controls, as recommended by the fixture manufacturer. See Figure 7.9.4
Figure 7.9.4
ACCESS REQUIREMENTS FOR A WHIRLPOOL BATH
ACCESS REQUIREMENTS FOR A WHIRLPOOL BATH
The control of mixed water temperature for whirlpool baths shall comply with Section 10.15.6.
Plastic shower receptors and shower stalls shall comply with CSA B45.5/IAPMO Z124.
Shower heads shall be designed and manufactured so that they will not exceed a water supply rate of 2.5 gallons per minute when tested in accordance with ASME A112.18.1/CSA B125.1.
EXCEPTION: Emergency safety showers.
- The control of mixed water temperatures shall comply with Section 10.15.6.
- Where shower heads are rated for maximum water flow rates of less than 2.5 gallons per minute, the mixed water temperature control valve that supplies the shower head shall be rated for the maximum flow rate of the shower head or less.
- Shower waste outlets and shower drains shall comply with ASME A112.18.2/CSA B125.2, ASME A112.6.3, ASME A112.3.1, or CSA B79.
- For a shower with a single 2.5 gpm shower head, the waste outlet drain shall be not less than 1-1/2 inches nominal pipe size. Combination bath/showers with 1-1/2" drains shall be permitted to have two 2.5 gpm shower heads.
- Showers with multiple shower heads shall have a 2" waste outlet pipe size for up to 10 gpm and a 3" waste outlet pipe size for up to 20 gpm. Refer to Table 11.5.8. Multiple waste outlets shall be provided where necessary.
- In group showers where each shower is not provided with an individual waste outlet, the waste outlet(s) shall be located and the floor so pitched that waste from one shower does not flow over the area serving another shower.
- Shower waste outlets, drain fittings, and outlet boxes shall be securely connected to the drainage piping system.
- Shower drain covers, grates, or strainers shall be removable.
- The minimum outside rough-in dimension for shower bases and prefabricated shower compartments shall be 32 inches, except where a shower receptor has a minimum overall dimension of 30 inches (750 mm) in width and 60 inches (1500 mm) in length.
- The minimum rough-in depth for prefabricated bath/shower combinations shall be 30 inches.
- Where shower compartments have glass enclosures or field-constructed tile walls, the compartment shall provide clearance for a 30 inch diameter circle with the door closed.
- The walls in shower compartments and above built-in bathtubs having installed shower heads shall be constructed of smooth non-corrosive, non-absorbent waterproof materials that extend to a height of not less than 68 inches above the fixture drain.
- The joints between walls and with bathtubs and shower compartment floors shall be water-tight.
- Adequate structural support shall be provided under shower floors.
- Finished shower floor surfaces shall be smooth and waterproof.EXCEPTION: Grouted shower floors and other shower floors that are not waterproof, but are water-resistant, shall be permitted if the floor has a shower pan liner or a pan, base, or receptor that is waterproof with drainage.
- Manufactured shower pans, shower bases, and shower receptors shall be installed in accordance with this Code and the manufacturer's instructions.
- The edges of shower pans, bases, and receptors shall include flanges or other means of making a waterproof joint with the walls of the shower enclosure.
- Shower pan liners shall be provided beneath shower floors that are water-resistant (not water-proof) and also if required by the manufacturer's installation instructions for prefabricated or prefinished shower pans, bases, or receptors.EXCEPTION: Shower pan liners shall not be required under water-resistant shower floors if they are installed on shower pans, bases, or receptors that provide for the drainage of water seepage through the floor finish.
- Shower pan liners shall slope to the shower drain outlet and be sealed to the weep holes in the drain fitting. The liner shall provide a water-tight basin up to the overflow elevation of the shower floor.
- Shower pan liners shall be tested for leakage. There shall be no leakage indicated on the floor surrounding the shower pan for a period of not less than 15 minutes.
See Figure 7.10.6
Figure 7.10.6
A SHOWER PAN AND DRAIN
A SHOWER PAN AND DRAIN
Whether exposed or concealed, the water supply riser pipe from the shower control valve(s) to the shower head outlet shall be secured to the wall structure. See Figure 7.10.7
Figure 7.10.7
A SHOWER HEAD SUPPLY RISER PIPE
A SHOWER HEAD SUPPLY RISER PIPE
- Sinks shall comply with the following standards:
- Enameled cast-iron; ASME A112.19.1/CSA B45.2
- Enameled steel; ASME A112.19.1/CSA B45.2
- Stainless steel; ASME A112.19.3/CSA B45.4
- Plastic; CSA B45.5/IAPMO Z124
- Vitreous and non-vitreous china; ASME A112.19.2/CSA B45.1
- Fixture supply fittings, including faucets and supply stops, shall comply with ASME A112.18.1/CSA B125.1.
- Fixture waste outlet fittings shall comply with ASME A112.18.2/CSA B125.2.
- Each compartment in a kitchen sink or bar sink shall have an outlet suitable for either a domestic food waste disposer or a basket strainer. The waste outlet pipe for each compartment shall be 1-1/2" nominal size. Outlet fittings shall have crossbars or other provisions for protecting the drain outlet and shall include a means of closing the drain outlet.
- Faucets for kitchen sinks and bar sinks shall be designed and manufactured so that they will not exceed a water flow rate of 2.2 gallons per minute when tested in accordance with ASME A112.18.1/CSA B125.1. See Figure 7.11.2
Figure 7.11.2
KITCHEN SINK DRAIN OUTLETS
KITCHEN SINK DRAIN OUTLETS
- Sinks for laundry use shall be not less than 12 inches deep with a strainer and waste outlet connection not less than 1-1/2" nominal size.
- Utility faucets for laundry sinks shall comply with ASME A112.18.1/CSA B125.1.
- Service sinks and mop receptors shall have removable strainers and waste outlet connections not less than 2" nominal size.
- Service sinks and mop receptors shall not be installed where walls and floors are not waterproof and do not have a smooth, readily cleanable surface. Refer to the International Building Code, Section 1209.2.2.
- Sanitary floor sinks shall be used as indirect waste receptors in Section 9.3. Their required drain outlet size shall be determined in accordance with Section 9.3.6.
- Sanitary floor sinks shall be enameled epoxy-coated cast iron, stainless steel, or PVC plastic construction, and shall comply with ASME A112.6.7.
- Top loading classification shall be light duty, medium duty, heavy duty, extra heavy duty, or special duty in accordance with ASME A112.6.3, based on their required safe live load.
- Floor sinks shall include anchor flanges, weepholes, flashing clamps, sediment buckets, and secondary strainers where required by their installation and application.
- Sink size and grate configuration shall be coordinated with the indirect waste piping being drained.
- Sink faucets having a hose thread or other means of attaching a hose to the outlet shall be protected from backsiphonage by either an integral vacuum breaker, an atmospheric vacuum breaker attached to the outlet, or pressure type vacuum breakers on the fixture supply lines.
- Sink faucets without provisions for connecting hoses shall be protected from backsiphonage by a fixed air gap complying with ASME A112.1.2 or Table 10.5.2.
- Drinking water facilities shall comply with the "lead-free" requirements of Section 3.4.6.
- Drinking water facilities for accessible use shall comply with Section 7.2.
- Drinking fountains shall comply with the following plumbing fixture standards:
- Enameled cast iron or steel: ASME A112.19.1/CSA B45.2
- Vitreous and non-vitreous china: ASME A112.19.2/CSA B45.1
- Stainless steel: ASME A112.19.3/CSA B45.4
- Drinking water coolers with self-contained refrigeration units shall comply with UL 399 and ASHRAE Standard 18.
- Water bottle filling stations shall comply with applicable standards. Stations with self-contained refrigeration units for chilled water shall comply with UL 399 and ASHRAE Standard 18.
The required drinking water facilities shall be in accordance with the applicable requirements of Section 7.21.
Drinking water facilities shall not be located in public toilet rooms. Convertible lavatory faucets that provide a discharge stream similar to a drinking fountain shall only be permitted in bathrooms in dwelling units.
Freeze-resistant drinking fountains shall be the sanitary type. Weep hole drains that form a cross connection between ground water and the potable water supply shall not be permitted.
- Automatic clothes washers for domestic use or use by the general public shall comply with AHAM HLW-1 or UL 2157 and shall have an air gap incorporated in the internal tub fill line.
- Commercial electric clothes washers shall comply with UL 1206 and include backflow prevention.
Comment: Automatic clothes washers that comply with the referenced appliance standards include an internal air gap in the water fill line and do not require the installation of an external backflow prevention device.
Domestic food waste disposer units shall comply with UL 430 and either AHAM FWD-1 or ASSE 1008.
Domestic food waste disposer units shall have not less than a 1-1/2" nominal waste connection to the drainage system. Such units may connect to a kitchen sink drain outlet, as permitted in Section 7.11.2.a.
Commercial food waste disposer units shall be connected to the drainage system and be separately trapped from any sink compartment or other fixture. The waste pipe size for such fixtures shall be of sufficient size to serve the fixture but shall be not less than 2-inch nominal size. See Figure 7.14.3
Figure 7.14.3
A COMMERCIAL FOOD WASTE DISPOSER INSTALLATION
A COMMERCIAL FOOD WASTE DISPOSER INSTALLATION
An adequate supply of water shall be provided for proper operation of food waste disposers.
- Domestic dishwashing machines shall comply with UL 749 and AHAM DW-1. The water supply to domestic dishwashing machines shall be protected from backsiphonage by an integral air gap, another internal means, or a vacuum breaker. Air gap fittings for drain discharge shall comply with ASSE 1021.
- Commercial dishwashing machines shall comply with UL 921 and NSF 3. Backflow prevention shall comply with ASSE 1004.
The discharge from a residential kitchen sink and dishwasher may discharge through a single 1-1/2" trap. The discharge line from the dishwasher shall be not less than the size recommended by the dishwasher manufacturer. It shall either be looped up and securely fastened to the underside of the counter or be connected to a deck-mounted dishwasher air gap fitting. The discharge shall then be connected to a branch inlet wye fitting between the sink waste outlet and the trap inlet. The discharge may also drain indirectly into a trapped standpipe, or receptor. See Figure 7.15.2
Figure 7.15.2
A RESIDENTIAL KITCHEN SINK AND DISHWASHER
A RESIDENTIAL KITCHEN SINK AND DISHWASHER
The discharge from a residential kitchen sink, dishwasher, and food waste disposer may discharge through a single 1-1/2" trap. The discharge line from the dishwasher shall be not less than the size recommended by the dishwasher manufacturer. It shall either be looped up and securely fastened to the underside of the counter or be connected to a deck-mounted dishwasher air gap fitting. The discharge shall then be connected either to the chamber of the food waste disposer or to a branch inlet wye fitting between the food waste disposer outlet and the trap inlet. The discharge may also drain indirectly into a trapped standpipe or receptor. See Figure 7.15.3
Figure 7.15.3
A RESIDENTIAL KITCHEN SINK, DISHWASHER, AND FOOD WASTE DISPOSER
A RESIDENTIAL KITCHEN SINK, DISHWASHER, AND FOOD WASTE DISPOSER
- Commercial dishwashing machines shall be indirectly connected to the drainage system through either an air gap or an air break. When the machine is within 5 feet developed length of a trapped and vented floor drain, an indirect waste pipe from the dishwasher may be connected to the inlet side of the floor drain trap. See Figure 7.15.4
- Commercial dishwashers shall be permitted to discharge through a grease interceptor in accordance with Section 6.2.6.a.
Figure 7.15.4
A COMMERCIAL DISHWASHING MACHINE
A COMMERCIAL DISHWASHING MACHINE
Floor drains, area drains, and trench drains shall comply with ASME A112.6.3 or, if stainless steel, ASME A112.3.1.
- The free area of the top grate or strainer grate for floor drains, area drains, and trench drains shall comply with ASME A112.6.3 based on their outlet connection size. Where floor drains and area drains receive other than clear water waste, they shall include an internal secondary outlet strainer or removable metal sediment bucket to retain solids.
- The trap seal for floor drains shall be not less than 2 inches deep.
- Where infrequently used floor drains are subject to evaporation of their trap seals, they shall either 1) be provided with a 4-inch deep trap seal and have an accessible means to replenish, or 2) be fed from an automatic trap seal priming device complying with ASSE 1018 or ASSE 1044, or 3) be fitted with a barrier type floor drain trap seal protection device complying with ASSE 1072.
- Where traps are automatically primed, the priming connection shall be above the weir of the trap.
See Figures 7.16.2-A through -C
Figure 7.16.2 - A
A FLOOR DRAIN TRAP AND STRAINER
A FLOOR DRAIN TRAP AND STRAINER
Figure 7.16.2 - B
A DEEP SEAL TRAP
A DEEP SEAL TRAP
Figure 7.16.2 - C
A FLOOR DRAIN WITH TRAP PRIMER
A FLOOR DRAIN WITH TRAP PRIMER
Floor drains shall be not less than 2" pipe size and be sized on the drain pipe size required for the floor drain application.
- Floor drains shall be provided in the following areas:
- Toilet rooms containing either one water closet and one wall hung urinal, two or more water closets, or two or more wall hung urinals, except in a dwelling unit.
- Commercial kitchens.
- Common Laundry Rooms
Floor drains located in walk-in coolers and walk-in freezers where food or other products for human consumption are stored shall be indirectly connected to the drainage system in accordance with Section 9.1.6.
Where floor drains receive indirect waste or other drainage on a regular or frequent basis, the elevation of the floor drain shall be set so that the floor within a 2 foot radius can be sloped to the drain.
Garbage can washers shall include a removable basket or strainer to prevent large particles of garbage from entering the drainage system. The water supply connection shall be protected from backsiphonage in accordance with Chapter 10. Garbage can washers shall be trapped and vented as required for floor drains. See Figure 7.17
Figure 7.17
A GARBAGE CAN WASHER
A GARBAGE CAN WASHER
The water supply to special installations shall be protected from backflow in accordance with Sections 10.4.3 and 10.5. Examples of such special installations include decorative fountains, ornamental pools and waterfalls, swimming and wading pools, baptisteries, and similar custom-built equipment.
Special installations requiring water supply and/or drainage shall be submitted.
Appropriate flushing devices shall be provided for water closets, urinals, clinical sinks, and other fixtures that depend on trap siphonage to discharge the contents of the fixture.
A separate flushing device shall be provided for each fixture.
EXCEPTION: A single device may be used to automatically flush two or more urinals.
- Flush tanks shall have ballcocks or other means to refill the tank after each discharge and to shutoff the water supply when the tank reaches the proper operating level. Ballcocks shall be the anti-siphon type and comply with ASSE 1002. See Figure 7.19.3
- Except in approved water closet and flush tank designs, the seat of the tank flush valve shall be at least 1 inch above the flood level rim of the fixture bowl.
- The flush valve shall be designed so that it will close tightly if the tank is flushed when the fixture drain is clogged or partly restricted, so that water will not spill continuously over the rim of the bowl or backflow from the bowl to the flush tank.
- Flush tanks shall include a means of overflow into the fixture served having sufficient capacity to prevent the tanks from overflowing with normal flow through the fill valve.
Figure 7.19.3
BALLCOCKS FOR WATER CLOSET FLUSH TANKS
BALLCOCKS FOR WATER CLOSET FLUSH TANKS
Flushometer tanks (pressure assisted) shall comply with ASSE 1037/ASME A112.1037/CSA B125.37 and shall include built-in pressure regulation and backflow prevention devices.
Flushometer valves shall comply with ASSE 1037/ASME A112.1037/CSA B125.37 and include a vacuum breaker assembly and means of flow adjustment. Flushometer valves shall be accessible for maintenance and repair. See Figure 7.19.5
Figure 7.19.5
FLUSHOMETER VALVE INSTALLATIONS
FLUSHOMETER VALVE INSTALLATIONS
The available water supply pressure shall be adequate for proper operation of the particular flushing devices used, as recommended by the manufacturer.
NOTE: Some one-piece tank-type water closets require 30 psig flowing pressure and a 1/2" supply for proper operation.
Special design fixtures for use in detention and correctional institutions shall comply with the requirements of this Code except that fixtures may be fabricated from welded seamless stainless steel and be equipped with necessary security devices. Water closets shall be the elongated type with integral or separate seats. Urinals shall have a continuous flushing rim that washes all four walls of the fixture.
Plumbing fixtures shall be provided for the type of building occupancy and in the numbers not less than those shown in Table 7.21.1.
| Table 7.21.1 see (1) MINIMUM NUMBER OF REQUIRED PLUMBING FIXTURES |
|||||||||
| Classification | Occupancy Group see (14) | No. of Persons of Each Sex see (4), (16) | Water Closets see (5) for urinals | Lavatories | Bath or Shower |
Drinking Water Facilities | Other | ||
| Male | Female | Male | Female | ||||||
| Assembly (A) |
A-1: Theaters and other facilities for the viewing of the performing arts or motion pictures, typically with fixed seats. See Notes: (6), (9) | 100 or less | 2 | 2 | 1 | 1 | 1 per 500 people | 1 service sink per floor (21) | |
| 101 - 200 | add 1 | add 1 | add 1 | add 1 | |||||
| 201 - 300 | add 1 | add 2 | add 0 | add 1 | |||||
| ea. add'l. 300 over 300 | add 1 | add 2 | add 1 | add 1 | |||||
| A-2: Night clubs, bars, taverns, and similar facilities where drink and/or food is consumed. See Notes: (3), (6), (8), (9), (13) | 25 or less | 1 | 1 | 1 | 1 | 1 per 250 people (2) | 1 service sink per floor (21) | ||
| 26 - 50 | add 1 | add 1 | add 1 | add 1 | |||||
| 51 - 100 | add 1 | add 1 | add 1 | add 1 | |||||
| ea. add'l. 200 over 100 | add 1 | add 1 | add 1 | add 1 | |||||
| A-2: Restaurants, banquet halls, food courts, carry-outs with seating. See Notes: (3), (6), (8), (9), (13) | 50 or less | 1 | 1 | 1 | 1 | 1 per 250 people (2) | 1 service sink per floor (21) | ||
| 51 - 100 | add 1 | add 1 | add 1 | add 1 | |||||
| 101 - 200 | add 1 | add 1 | add 0 | add 0 | |||||
| 201 - 300 | add 1 | add 1 | add 1 | add 1 | |||||
| ea. add'l. 200 over 300 | add 1 | add 1 | add 1 | add 1 | |||||
| A-3: Museums, art galleries, exhibition halls, lecture halls, libraries. See Notes: (6), (9) | 50 or less | 1 | 1 | 1 | 1 | 1 per 500 people | 1 service sink per floor (21) | ||
| 51 - 150 | add 1 | add 1 | add 1 | add 1 | |||||
| 151 - 300 | add 1 | add 1 | add 1 | add 1 | |||||
| ea. add'l. 300 over 300 | add 1 | add 1 | add 1 | add 1 | |||||
| A-3: Passenger terminals, transportation facilities. See Notes: (6), (9) | 100 or less | 1 | 1 | 1 | 1 | 1 per 500 people | 1 service sink per floor (21) | ||
| 101 -250 | add 2 | add 2 | add 1 | add 1 | |||||
| ea. add'l. 250 over 250 | add 2 | add 2 | add 1 | add 1 | |||||
| A-3: Places of worship and other religious services. See Notes: (6), (9) | 25 or less | 1 | 1 | 1 | 1 | 1 per 500 people | 1 service sink per floor (21) | ||
| 26 - 150 | add 1 | add 1 | add 1 | add 1 | |||||
| ea. add'l. 150 over 150 | add 1 | add 1 | add 1 | add 1 | |||||
| A-3: Gymnasiums (without spectator seating), health spas. See Notes: (6), (9), (20) | 50 or less | 1 | 1 | 1 | 1 | 1 per 200 people | 1 service sink per floor (21) | ||
| 51 - 100 | add 1 | add 1 | add 1 | add 1 | |||||
| 101 - 200 | add 1 | add 1 | add 1 | add 1 | |||||
| ea. add'l. 200 over 200 | add 2 | add 2 | add 2 | add 2 | |||||
| A-4: Coliseums, arenas, skating rinks, pools, and tennis courts for indoor sporting events and activities. See Notes: (6), (9), (20) | 1 - 100 | 2 | 2 | 2 | 2 | 1 per 500 people | 1 service sink per floor (21) | ||
| 101 - 200 | add 2 | add 2 | add 2 | add 2 | |||||
| 201 - 400 | add 2 | add 2 | add 2 | add 2 | |||||
| ea. add'l. 400 up to 2400 | add 2 | add 4 | add 1 | add 2 | |||||
| ea. add'l. 600 over 2400 | add 2 | add 4 | add 1 | add 2 | |||||
| A-5: Stadiums, amusement parks, bleachers and grandstands for outdoor sporting events and activities. See Notes: (6), (9), (20) | 1 - 100 | 2 | 2 | 2 | 2 | 1 per 1000 people | 1 service sink per floor (21) | ||
| 101 - 200 | add 2 | add 2 | add 2 | add 2 | |||||
| 201 - 400 | add 2 | add 2 | add 2 | add 2 | |||||
| ea. add'l. 400 up to 2400 | add 2 | add 4 | add 1 | add 2 | |||||
| ea. add'l. 600 over 2400 | add 2 | add 4 | add 1 | add 2 | |||||
| Business (B) |
B: Buildings for the transaction of business, professional services, office buildings, banks, and similar uses. See Notes: (6), (9), (12), (15) | 1 - 15 | 1 | 1 | 1 | 1 | 1 per 100 people (2) | 1 service sink per floor (21) | |
| 16 - 50 | add 1 | add 1 | add 0 | add 0 | |||||
| ea. add'l. 50 over 50 | add 1 | add 1 | add 1 | add 1 | |||||
| Education (E) |
E-1: Day Care, Preschool, Kindergarten. See Notes: (6), (9) | 15 or less | 1 | 1 | 1 | 1 | 1 per 100 people | 1 service sink per floor (21) | |
| 16 - 30 | add 1 | add 1 | add 1 | add 1 | |||||
| 31 - 50 | add 1 | add 1 | add 1 | add 1 | |||||
| 51 - 75 | add 1 | add 1 | add 1 | add 1 | |||||
| 76 - 100 | add 1 | add 1 | add 1 | add 1 | |||||
| ea. add'l. 50 over 100 | add 1 | add 1 | add 1 | add 1 | |||||
| E-2: Elementary Grades 1 - 6 See Notes: (6), (9) | 25 or less | 1 | 1 | 1 | 1 | 1 per 100 people | 1 service sink per floor (21) | ||
| 26 - 50 | add 1 | add 1 | add 1 | add 1 | |||||
| 51 -75 | add 1 | add 1 | add 1 | add 1 | |||||
| 76 - 100 | add 1 | add 1 | add 1 | add 1 | |||||
| ea. add'l. 50 over 100 | add 1 | add 1 | add 1 | add 1 | |||||
| E-3: Secondary Grades 7- 12 and higher education facilities. See Notes: (6), (9), (17) | 30 or less | 1 | 1 | 1 | 1 | 1 per 100 people | 1 service sink per floor (21) | ||
| 31 - 60 | add 1 | add 1 | add 1 | add 1 | |||||
| 61 - 100 | add 1 | add 1 | add 1 | add 1 | |||||
| ea. add'l. 50 over 100 | add 1 | add 1 | add 1 | add 1 | |||||
| Factory (F) |
F-1 and F-2: Structures in which occupants are engaged in work fabricating, assembling, or processing products, materials, food, etc. See Notes: (6), (9) | 25 or less | 1 | 1 | 1 | 1 | 1 emergency shower per 10 people exposed to skin contamina- tion | 1 per 250 people | 1 service sink per floor (21) |
| 26 - 50 | add 1 | add 1 | add 1 | add 1 | |||||
| 51 - 100 | add 1 | add 1 | add 1 | add 1 | |||||
| ea. add'l. 100 over 100 | add 1 | add 1 | add 1 | add 1 | |||||
| Institutional (I) |
I-1: Residential care, assisted living facilities (24-hour). See Notes: (6), (9), (11) | 1 - 10 | 1 | 1 | 1 | 1 | 1 per 8 occupants | 1 per 100 occupants | 1 service sink per floor (21) |
| ea. add'l. 10 over 10 | add 1 | add 1 | add 1 | add 1 | |||||
| I-2: Patients in hospitals, nursing homes, etc. | 1 water closet per patient room | 1 lavatory per patient room | 1 per patient room | ||||||
| I-2: Employees in hospitals, etc. See Notes: (6), (9) | 25 or less | 1 | 1 | 1 | 1 | 1 per 100 people | 1 service sink per floor per wing (21) | ||
| 26 - 50 | add 1 | add 1 | add 0 | add 0 | |||||
| 51 - 100 | add 1 | add 1 | add 1 | add 1 | |||||
| ea. add'l. 100 over 100 | add 1 | add 1 | add 1 | add 1 | |||||
| I-2: Visitors in hospitals, etc. See Notes: (6), (9) | 50 or less | 1 | 1 | 1 | 1 | 1 per 500 people | |||
| 51 - 100 | add 1 | add 1 | add 1 | add 1 | |||||
| ea. add'l. 100 over 100 | add 1 | add 1 | add 1 | add 1 | |||||
| I-3: Prisoners in prisons. | 1 per cell | 1 per cell | 1 per 15 prisoners | 1 per 100 prisoners | |||||
| I-3: Detainees in reformatories, detention centers, and correctional centers. | 15 or less | 1 | 1 | 1 | 1 | 1 per 15 detainees | 1 per 100 detainees | ||
| 16 - 30 | add 1 | add 1 | add 1 | add 1 | |||||
| 31 - 50 | add 1 | add 1 | add 1 | add 1 | |||||
| 51 - 75 | add 1 | add 1 | add 1 | add 1 | |||||
| 76 - 100 | add 1 | add 1 | add 1 | add 1 | |||||
| ea. add'l. 50 over 100 | add 1 | add 1 | add 1 | add 1 | |||||
| I-3: Employees in prisons, reformatories, etc. See Note: (9) | 25 or less | 1 | 1 | 1 | 1 | 1 per 100 people | 1 service sink per floor per wing (21) | ||
| 26 - 50 | add 1 | add 1 | add 0 | add 0 | |||||
| 51 - 100 | add 1 | add 1 | add 1 | add 1 | |||||
| ea. add'l. 50 over 100 | add 1 | add 1 | add 1 | add 1 | |||||
| I-3: Visitors in prisons, reformatories, etc. See Note: (9) | 50 or less | 1 | 1 | 1 | 1 | 1 per 500 people | |||
| 51 - 100 | add 1 | add 1 | add 1 | add 1 | |||||
| ea. add'l. 100 over 100 | add 1 | add 1 | add 1 | add 1 | |||||
| I-4: Adult day care, child day care. See Note: (9) | 15 or less | 1 | 1 | 1 | 1 | 1 per 100 people | 1 service sink per floor (21) | ||
| 16 - 30 | add 1 | add 1 | add 1 | add 1 | |||||
| 31 - 50 | add 1 | add 1 | add 1 | add 1 | |||||
| 51 -75 | add 1 | add 1 | add 1 | add 1 | |||||
| 76 - 100 | add 1 | add 1 | add 1 | add 1 | |||||
| ea. add'l. 50 over 100 | add 1 | add 1 | add 1 | add 1 | |||||
| Mercantile (M) |
M: Stores, shops, markets, shopping centers, sales rooms, service stations, etc. See Notes: (6), (7), (9), (12), (15) | 50 or less | 1 | 1 | 1 | 1 | 1 per 500 people (2) | 1 service sink per floor (21) | |
| 51 - 150 | add 1 | add 1 | add 0 | add 0 | |||||
| 151 - 400 | add 1 | add 1 | add 1 | add 1 | |||||
| ea. add'l. 400 over 400 | add 1 | add 1 | add 1 | add 1 | |||||
| Residential (R) |
R-1: Hotels, motels, boarding houses (transient) | 1 water closet per guest room | 1 lavatory per guest room | 1 per guest room | 1 service sink per floor (21) | ||||
| R-2: Dormitories, fraternities, sororities, boarding houses (not transient) See Note: (9) | 10 or less | 2 | 2 | 2 | 2 | 1 per 8 people | 1 per 100 people | 1 service sink per floor (21) | |
| 11 - 20 | add 1 | add 1 | add 1 | add 1 | |||||
| ea. add'l. 20 over 20 | add 2 | add 2 | add 2 | add 2 | |||||
| R-2: Apartment houses, condominiums. | 1 water closet per unit | 1 lavatory per unit | 1 per unit | 1 kitchen sink per unit provisions for 1 clothes washer per 20 units (10) |
|||||
| R-3/R-5: One- and two-family dwellings. | 1 water closet per unit | 1 lavatory per unit | 1 per unit | 1 kitchen sink per unit provisions for 1 clothes washer per unit |
|||||
| R-3: Congregate living facilities with 16 or fewer persons. See Note: (9) | 10 or less | 1 | 1 | 1 | 1 | 1 per 8 people | 1 per 100 people | 1 service sink per floor (21) | |
| ea. add'l. 10 over 10 | add 1 | add 1 | add 1 | add 1 | |||||
| R-4: Residential care, assisted living facilities. See Note: (9) | 10 or less | 1 | 1 | 1 | 1 | 1 per 8 people | 1 per 100 people | 1 service sink per floor (21) | |
| ea. add'l. 10 over 10 | add 1 | add 1 | add 1 | add 1 | |||||
| Storage (S) |
S-1 & S-2: Structures for the storage of goods, warehouses, storehouses, and freight depots. See Notes: (6), (9), (18), (19) | 50 or less | 1 | 1 | 1 | 1 | 1 per 500 people | 1 service sink per floor (21) | |
| 51 - 100 | add 1 | add 1 | add 0 | add 0 | |||||
| ea. add'l. 100 over 100 | add 1 | add 1 | add 1 | add 1 | |||||
Notes for Table 7.21.1 (where indicated in the Table):
- Plumbing fixtures shall be provided in numbers not less than those shown in this Table for the type of building occupancy (7.21.1).
- Drinking water facilities for customers are not required in restaurants or other food service establishments if drinking water service is available (7.21.8.c). Drinking water facilities are not required for customers in mercantile or business establishments where normal occupancy is short term (7.21.7.c). Kitchen sinks and bar sinks may be used for employee drinking water facilities (7.21.5.b).
- In food preparation areas, fixture requirements may be dictated by local Health Codes (7.21.6.b).
- Wherever both sexes are present in approximately equal numbers, multiply the total census by 50% to determine the number of persons of each sex to be provided for (7.21.2.c). This regulation applies only where specific information that would otherwise affect the fixture count is not provided.
- Not more than 50% of the required number of water closets for males may be urinals (7.21.5.a).
- In buildings with multiple floors, access to fixtures shall not exceed one vertical story (7.21.3.a).
- Fixtures for customers and employees as required by this Table may be met by providing centrally located facilities accessible to several stores (7.21.7.b). The maximum distance from the entry for any store to these facilities shall not exceed 500 feet (7.21.7.b).
- Where food service establishments and food courts are open to public areas in malls and transportation terminals, toilet facilities for both customers and employees may be centrally located and serve multiple establishments (7.21.8.b).
- Fixtures accessible only to private offices shall not be counted to determine compliance with this Table (7.21.3.b).
- Facilities without laundry rooms for their occupants shall not require provisions for clothes washers (7.21.5.c).
- In residential care facilities where water closets and lavatories are provided in individual patient rooms, the minimum number of fixtures for employees and visitors shall be as required for hospitals.
- Requirements for employees and customers may be met with a single set of restrooms (7.21.7.a).
- If the design number of customers in food handling establishments exceeds 100, separate facilities for employees and customers are required (7.21.8.a).
- Occupancy groups shall be as described in the local building code.
- See 7.21.4 and 7.21.7 for toilet facilities for occupancies with a total floor area of 1500 square feet or less.
- In determining the number of required fixtures for numbers of persons that fall in the "each additional (xx) over (xx)" listings, the requirement applies to fractions of the listed group (7.21.10).
- Laboratories in higher education facilities shall have safety showers if required by ANSI/ISEA Z358.1 and the facility design.
- Warehouse storage area requirements shall be permitted to be met by providing a facility centrally located within the storage area. The maximum travel distance to the facility shall not exceed 500 feet.
- The requirements for multiple individual self-storage areas shall be permitted to be met by fixtures located in the facility's administration building. The administration office must be accessible during normal business hours.
- Showers may be omitted in recreational facilities without locker rooms when approved by the Authority Having Jurisdiction.
- Service sinks may not be required on floor levels if the AHJ determines that housekeeping is not required (7.21.5.d). Service sinks shall be permitted to serve two adjacent floors (one above and one below) where there is service elevator access.
- The minimum number of plumbing fixtures shall be based on the number of persons to be served by the fixtures, as determined by the person responsible for the design of the plumbing system.
- Where the occupant load is not established and is based on the egress requirements of a building subcode, the number of occupants for plumbing purposes shall be permitted to be reduced to two-thirds of that for fire or life safety purposes.
- Wherever both sexes are present in approximately equal numbers, the total occupant load shall be multiplied by 50 percent to determine the number of persons of each sex to be provided for, unless specific information concerning the percentage of male and female occupants is available.
- Plans for plumbing systems, where required, shall indicate the maximum number of persons to be served by the facilities.
- In occupancies having established seating, such as auditoriums and restaurants, the number of occupants for plumbing purposes shall not be less than the number of seats.
- In multi-story buildings, accessibility to the required fixtures shall not exceed one story.
- Fixtures accessible only to private offices shall not be counted to determine compliance with Section 7.21.1.
- The lavatories required by Tables 7.21.1 for employee and public toilet facilities shall be located within the same toilet facility as their associated water closets and urinals.
- Separate toilet facilities shall be provided for each sex.
EXCEPTIONS:
- Residential installations
- In occupancies serving 15 or fewer people, one toilet facility, designed for use by no more than one person at a time, shall be permitted for use by both sexes
- In business occupancies with a total floor area of 1500 square feet or less, one toilet facility, designed for use by no more than one person at a time, shall satisfy the requirements for serving customers and employees of both sexes
- In mercantile occupancies with a net occupiable floor area of 1500 square feet or less that is accessible to customers, one toilet facility designed for use by no more than one person at a time shall satisfy the requirements for serving customers and employees of both sexes
- Urinals: In male toilet rooms, urinals may be substituted for up to 50% of the required number of water closets.
- Drinking Water Facilities: A kitchen or bar sink shall be considered as meeting the requirements for drinking water facilities for employees who have access to the facilities.
- Provisions for Clothes Washers: Apartment buildings and condominiums without laundry rooms for their occupants shall not require provisions for centralized clothes washers for use by multiple occupants.
- Service Sinks: Service sinks may be omitted when the Authority Having Jurisdiction determines that they are not necessary for proper cleaning of the facility.
- Additional fixtures may be required when unusual environmental conditions or special activities are encountered.
- In food preparation areas of commercial food establishments, fixture requirements may be dictated by the health and/or sanitary codes. Fixtures, fixture compartments and appliances used for rinsing or sanitizing equipment or utensils, processing or preparing food for sale or serving, shall be installed in accordance with Section 9.1.1 to ensure the required protection from backflow and flooding.
- Types of occupancies not shown in Table 7.21.1 shall be considered individually by the Authority Having Jurisdiction.
- Where swimming pools operated by an apartment building, condominium, or similar multi-family dwelling unit are restricted to the use of residents and guests of residents of dwelling units in the immediate vicinity of the pool, the minimum required toilet facilities for bathers within the pool compound shall be one (1) male toilet room and one (1) female toilet room, each consisting of a water closet and lavatory as a minimum.
- Hand washing facilities shall be provided in each examination room in a doctor's office or medical office, dental treatment room, massage treatment room, tattoo parlor or any other facility where skin-to-skin contact is necessary for performing a service and if required by the use and occupancy regulations for a facility.
- Within a single establishment, facilities for customers and employees shall be permitted to be met with a single set of restrooms accessible to both groups. The required number of fixtures shall be based on the total number of customers and employees.
- Fixtures for customer and employee use shall be permitted to be met by providing centrally located facilities accessible to multiple establishments. The maximum distance of entry to these facilities shall not exceed 500 feet from the entrance of any establishment served.
- Drinking water facilities shall not be required for customers where normal occupancy is short term as defined in Section 1.2.
- For establishments less than 1500 square feet in total floor area, one water closet and one lavatory in a restroom shall be permitted to provide the requirements for serving the both customers and employees.
- Restaurants and other food service establishments with a seated occupant load exceeding 100 customers shall be provided with separate toilet facilities for employees and customers. Customer and employee toilet facilities may be combined for seated customer loads of 100 or less and fixtures shall be provided for the total number of customers and employees. For employees of 15 or less, one employee toilet facility, designed for use by no more than one person at a time, shall be permitted for use by both sexes.
- Where food service establishments and food courts are open to public areas in malls and transportation terminals, toilet facilities that serve both customers and employees may be centrally located and serve multiple establishments. The maximum distance of entry to central toilet facilities shall be 500 feet from any establishment or food court served.
- Drinking water facilities shall not be required in restaurants or other food service establishments if drinking water service is provided or available on request.
- Accessible family or assisted-use toilet rooms containing one water closet and one lavatory shall be provided as required by the building subcode.
- In assembly and mercantile occupancies, the plumbing fixtures within family and assisted-use toilet rooms may be counted as part of the minimum required fixtures for males or for females.
- In Table 7.21.1, where the number of persons of each sex is less than 100% of a particular group, the number of fixtures required for that group may be reduced by the fraction of the persons in that group. The fraction of the required fixtures shall be rounded up to the next whole number.
- Where a facility includes two or more different occupancy classifications with access to the same installed plumbing fixtures, the fraction of the required fixtures for each classification may be added and the total combined fraction of the required fixtures shall be rounded up to the next whole number.
Water softeners, reverse osmosis water treatment units, and other drinking water treatment systems shall meet the requirements of the appropriate standards referenced in Section 10.18.1. Waste discharge from such equipment shall enter the drainage system through an air gap. Waste discharge piping shall be of a material approved for potable water, sanitary drainage, or storm drainage.
- Ultraviolet tubes shall be jacketed so that a temperature of 105°F is maintained.
- The jacket on the ultraviolet tubes shall be quartz or high-silica glass with similar optical characteristics.
- The ultraviolet disinfection unit shall be designed and installed to permit frequent cleaning of the water contact surface of the ultraviolet light tube jacket.
- The maximum water depth in the disinfection chamber, measured from the ultraviolet light tube surface to the outer walls of the chamber, shall not exceed three inches.
- Ultraviolet radiation level of 2,537 Angstrom shall be applied at all points throughout the disinfection chamber at a minimum rate of 16,000 microwatt seconds per square centimeter.
- An automatic flow control valve, accurate within the expected pressure range, shall be installed to restrict flow to the maximum design flow of the ultraviolet disinfection unit.
- An accurately calibrated ultraviolet light intensity meter, filtered to confine its sensitivity to the range of disinfection spectrum, shall be installed in the wall of the disinfection chamber at the point of greatest water depth from the light transmitting source.
- A flow diversion valve or automatic shut-off valve controlled by the ultraviolet light intensity meter shall be installed so as to permit water flow into the water system only when the minimum radiation level specified in "e" above is applied. When power is not being supplied to the unit, the valve shall be in a closed (fail-safe) position to prevent the flow of water into the water system.
- The ultraviolet light disinfection unit shall be installed in a manner such that it cannot be bypassed.
- The ultraviolet light disinfection unit shall be installed downstream of any other water conditioning/filtering equipment.
Suction outlets shall be designed and installed in accordance with ANSI/APSP/ICC-7.
- Emergency eyewash, eye/face wash, and shower equipment shall comply with the requirements of ANSI/ISEA Z358.1
- The installer shall assemble and install the equipment in accordance with the manufacturer's instructions.
- The location of the emergency equipment shall be determined by the facility designer to provide the required access for protection from the specific hazards within the facility.
- The emergency equipment shall be designed and manufactured to provide the discharge patterns and flow rates required by ANSI/ISEA Z358.1 for the hazard(s) for which protection is being provided.
- The temperature of the flushing fluid shall be from 60°F to 100°F unless the facility designer has indicated that other specific temperatures are required to provide protection from a particular hazard.
- Temperature actuated mixing valves for plumbed emergency equipment shall comply with ASSE 1071.
- The minimum required water supply shall be 0.4 gpm for eyewashes, 3.0 gpm for eye/face washes, and 20 gpm for showers in accordance with ANSI/ISEA Z358.1.
- Water supply shutoff valves shall have provisions to prevent unauthorized closure.
- Equipment with waste pipe connections shall be connected to the building drain piping. Floor drains shall be provided for showers and equipment without waste connections.
- Where necessary for the hazards that the emergency equipment is being provided for, the drainage shall be neutralized or otherwise treated before discharge into the building drainage system. Acid waste shall be connected to an acid waste disposal system if available.
- Where floor drains or other receptors associated with emergency fixtures are provided, they shall be sized based on the GPM discharge capacity of the emergency fixtures, but their drainage fixture unit (DFU) load on the sanitary drainage system piping shall be zero (0.0 DFU). The discharge pipe size for such floor drains or receptors shall be the minimum size for all downstream drain piping.
Commercial dishwashing pre-rinse spray valves shall have a maximum flow rate of 1.6 gallons per minute at 60 psi.