• Codes
  • Features

    Features Overview

    Go to features
    Reference

    Reference.

    A reliable and up-to-date source of codes.
    Research

    Research.

    Rapidly and efficiently calculate project parameters.
    Collaboration

    Collaboration.

    Get everyone on the same page and streamline code research.
    Workflows
    Architects General Contractor Building Official & Plans Examiner Inspectors Owner Subcontractors Code Consultants
  • Pricing
  • Login
  • Sign Up
Sign Up
Login
  • Code Library
  • Features
  • Pricing
  • About
  • Careers
  • Help
  • Contact
  • Terms
  • Privacy
Sign Up
Upgrade to Premium
Code calculators: Code Calculators automatically generates a detailed list of requirements.
REFERENCE
Amendment Styling
Industry-leading search
Suggested code sections
Code diagrams
RESEARCH
Code calculators
Filter by topic
Code compare
Code sheet exports
COLLABORATION
Team projects
Bookmarks
Comments
START 2 WEEK FREE TRIAL
Have an account? Sign in
// CODE SNIPPET

Section 702 Fixtures, Fittings, Equipment and Appliances

Green Construction Code 2012 of Maryland > 7 Water Resource Conservation, Quality and Efficiency > 702 Fixtures, Fittings, Equipment and Appliances
JUMP TO FULL CODE CHAPTER

702.1 Fitting and Fixture Consumption

Fixtures shall comply with Table 702.1 and the following:
  1. For dwelling unit and guestroom shower compartments with a floor area of not greater than 2600 in2 (1.7 m2), the combined flow rate from shower water outlets that are capable of operating simultaneously including rain systems, waterfalls, body sprays and jets shall not exceed 2.0 gallons per minute (gpm) (7.6 L/min). Where the floor area of such shower compartments is greater than 2600 in2 (1.7 m2), the combined flow rate from simultaneously operating shower water outlets shall not exceed 2.0 gpm (7.6 L/min) for each additional 2600 in2 (1.7 m2) of floor area or portion thereof.
  2. In gang shower rooms, the combined flow rate from shower water outlets that are capable of operating simultaneously including rain systems, waterfalls, body sprays and jets shall not exceed 2.0 gpm (7.6 L/min) for every 1600 in2 (1.01 m2) or portion thereof of room floor area.
  3. In shower compartments required to comply with the requirements of Chapter 11 of the International Building Code, the combined flow rate from shower water outlets that are capable of operating simultaneously including rain systems, waterfalls, body sprays and jets shall not exceed 4.0 gpm (15.1 L/min) for every 2600 in2 (1.7 m2) or portion thereof of room floor area.

TABLE 702.1
MAXIMUM FIXTURE AND FITTING FLOW RATES
FOR REDUCED WATER CONSUMPTION

FIXTURE OR FIXTURE FITTING TYPEMAXIMUM FLOW RATE
Showerheada2.0 gpm and WaterSense labeled
Lavatory faucet and bar sink—private1.5 gpm
Lavatory faucet—public (metered)0.25 gpcb
Lavatory faucet—public (nonmetered)0.5 gpm
Kitchen faucet—private2.2 gpm
Kitchen and bar sink faucets in other
than dwelling units and guestrooms
2.2 gpm
Urinal0.5 gpf and WaterSense labeled or nonwater urinal
Water closet—public and remotec1.6 gpf
Water closet—public and nonremote1.28 gpf averaged, e
Water closet-tank type, private1.28 gpf and WaterSense labeledd
Water closet—flushometer type, private1.28 gpfe
Prerinse spray valves1.3 gpm
Drinking fountains (manual)0.7 gpm
Drinking fountains (metered)0.25 gpcb
For SI: 1 foot = 304.8 mm, 1 gallon per cycle (gpc) = 3.8 Lpc, 1 gallon per flush (gpf) = 3.8 Lpf, 1 gallon per minute (gpm) = 3.8 Lpm.
  1. Includes hand showers, body sprays, rainfall panels and jets. Showerheads shall be supplied by automatic compensating valves that comply with ASSE 1016 or ASME A112.18.1/CSA B125.1 and that are specifically designed to function at the flow rate of the showerheads being used.
  2. Gallons per cycle of water volume discharged from each activation of a metered faucet.
  3. A remote water closet is a water closet located not less than 30 feet upstream of other drain line connections or fixtures and is located where less than 1.5 drainage fixture units are upstream of the drain line connection.
  4. The effective flush volume for a dual-flush water closet is defined as the composite, average flush volume of two reduced flushes and one full flush.
  5. In public settings, the maximum water use of a dual flush water closet is based solely on its full flush operation; not an average of full and reduced volume flushes.

702.2 Combination Tub and Shower Valves

Tub spout leakage from combination tub and shower valves that occurs when the outlet flow is diverted to the shower shall not exceed 0.1 gpm, measured in accordance with the requirements of ASME A112.18.1/CSA B125.1.

702.3 Food Establishment Prerinse Spray Valves

Food establishment prerinse spray valves shall have a maximum flow rate in accordance with Table 702.1 and shall shut off automatically when released.

702.4 Drinking Fountain Controls

Drinking fountains equipped with manually controlled valves shall shut off automatically upon the release of the valve. Metered drinking fountains shall comply with the flow volume specified in Table 702.1.

702.5 Nonwater Urinal Connection

The fixture drain for nonwater urinals shall connect to a branch drain that serves one or more lavatories, water closets or water-using urinals that discharge upstream of such urinals.

702.6 Appliances

Sections 702.6.1 through 702.6.4 shall regulate appliances that are not related to space conditioning.

702.6.1 Clothes Washers

Clothes washers of the type in the ENERGY STAR program as defined in "ENERGY STAR® Program Requirements, Product Specification for Clothes Washers, Eligibility Criteria," shall have a water factor (WF) not exceeding 6.0 and a modified energy factor (MEF) of not less than 2.0.

702.6.2 Ice Makers

Ice makers shall not be water cooled. Ice makers producing cubed-type ice shall be ENERGY STAR qualified as commercial ice machines. Ice makers of a type not currently ENERGY STAR qualified, such as flake, nugget or continuous-type ice makers, shall not exceed the total water use of 25 gallons per 100 pounds (208 L per 100 kg) of ice produced.

702.6.3 Steam Cookers

Steam cookers shall consume not more than the amounts indicated in Table 609.2.3.

702.6.4 Dishwashers

Dishwashers shall be ENERGY STAR qualified where an ENERGY STAR category exists for the specific dishwasher type. Where an ENERGY STAR category does not exist, the dishwasher shall be in accordance with Table 702.6.4.

TABLE 702.6.4
MAXIMUM WATER CONSUMPTION
FOR COMMERCIAL DISHWASHERS
DISHWASHER TYPE MAXIMUM WATER CONSUMPTION
Rackless conveyor 2.2 gallons per minute
Utensil washer 2.2 gallons per rack

For SI: 1 gallon per minute = 3.785 Lpm.

702.7 Municipal Reclaimed Water

Where required by Table 302.1 and where municipal reclaimed water is accessible and allowed for such use by the laws, rules and ordinances applicable in the jurisdiction, it shall be supplied to water closets, water-supplied urinals, water-supplied trap primers and applicable industrial uses. A municipal reclaimed water supply shall be deemed accessible where the supply is not greater that 150 percent of the distance that the potable water supply is from the lot boundary or the supply is within 100 feet (30.5 m) of a potable water supply that serves the lot.

702.8 Efficient Hot and Tempered Water Distribution

Hot and tempered water distribution shall comply with either the maximum pipe length or maximum pipe volume limits in this section. Hot and tempered water shall be delivered to the outlets of individual showers, combination tub-showers, sinks, lavatories, dishwashers, washing machines and hot water hose bibbs in accordance with Section 702.8.1 or Section 702.8.2. For purposes of this section, references to pipe shall include tubing. For purposes of this section, the source of hot or tempered water shall be considered to be a water heater, boiler, circulation loop piping or electrically heat-traced piping.

702.8.1 Maximum Allowable Pipe Length Method

The maximum allowable pipe length from the source of hot or tempered water to the termination of the fixture supply pipe shall be in accordance with the maximum pipe length columns in Table 702.8.2. Where the length contains more than one size of pipe, the largest size shall be used for determining the maximum allowable length of the pipe in Table 702.8.2.

702.8.2 Maximum Allowable Pipe Volume Method

The water volume in the piping shall be calculated in accordance with Section 702.8.2.1. The maximum volume of hot or tempered water in the piping to public lavatory faucets, metering or nonmetering, shall be 2 ounces (0.06 L). For fixtures other than public lavatory faucets, the maximum volume shall be 64 ounces (1.89 L) for hot or tempered water from a water heater or boiler; and 24 ounces (0.7 L) for hot or tempered water from a circulation loop pipe or an electrically heat-traced pipe.

TABLE 702.8.2
MAXIMUM LENGTH OF PIPE OR TUBE
NOMINAL PIPE OR TUBE
SIZE (inch)
LIQUID OUNCES PER FOOT
OF LENGTH
MAXIMUM PIPE OR TUBE LENGTH
System without a circulation
loop or heat-traced line (feet)
System with a circulation
loop or heat-traced line (feet)
Lavatory faucets — public
(metering and nonmetering)
(feet)
1/4a 0.33 50 16 6
5/16a 0.5 50 16 4
3/8a 0.75 50 16 3
1/2 1.5 43 16 2
5/8 2 32 12 1
3/4 3 21 8 0.5
7/8 4 16 6 0.5
1 5 13 5 0.5
11/4 8 8 3 0.5
11/2 11 6 2 0.5
2 or larger 18 4 1 0.5

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 gallon per minute = 3.785 L/m, 1 ounce = 29.6 ml.
  1. The flow rate for 1/4-inch size pipe or tube is limited to 0.5 gallons per minute; for 5/16-inch size, it is limited to 1 gpm; for 3/8-inch size, it is limited to 1.5 gpm.

702.8.2.1 Water Volume Determination

The volume shall be the sum of the internal volumes of pipe, fittings, valves, meters and manifolds between the source of hot water and the termination of the fixture supply pipe. The volume shall be determined from the liquid ounces per foot column of Table 702.8.2. The volume contained within fixture shutoff valves, flexible water supply connectors to a fixture fitting, or within a fixture fitting shall not be included in the water volume determination. Where hot or tempered water is supplied by a circulation loop pipe or an electrically heat-traced pipe, the volume shall include the portion of the fitting on the source pipe that supplies water to the fixture.

702.9 Trap Priming Water

Potable water shall not be used for trap priming purposes where an alternate nonpotable onsite water distribution system, a reclaimed water distribution system or a gray water distribution system is available.

702.9.1 Continuous Operation Prohibited

Trap primers that allow continuous water flow shall be prohibited.

702.9.2 Volume Limitation

Trap primers shall be of the type that use not more than 30 gallons (114 L) per year per trap.

702.9.3 Water Criteria

Where nonpotable water is available and is already being used to supply plumbing fixtures, such water shall be used to supply trap primers.

702.10 Water-Powered Pumps

Water-powered pumps shall not be used as the primary means of removing ground water from sumps. Where used as an emergency backup pump for the primary pump, the primary pump shall be an electrically powered pump and the water-powered pump shall be equipped with an auditory alarm that indicates when the water-powered pump is operating. The alarm shall have a minimum sound pressure level rating of 85 dB measured at a distance of 10 feet (3048 mm). Where water-powered pumps are used, they shall have a water-efficiency factor of pumping not less than 2 gallons (7.6 L) of water to a height of 8 feet (2438 mm) for every 1 gallon (3.8 L) of water used to operate the pump, measured at a water pressure of 60 psi (413.7 kPa). Pumps shall be clearly marked as to the gallons (liters) of water pumped per gallon (liters) of potable water consumed.

702.11 Food Service Handwashing Faucets

Faucets for handwashing sinks in food service preparation and serving areas shall be of the self-closing type.

702.12 Dipper Wells

The water supply to a dipper well shall have a shutoff valve and flow control valve. Water flow into a dipper well shall not exceed 1 gpm (3.78 Lpm) at a supply pressure of 60 psi (413.7 kPa).

702.13 Automated Vehicle Wash Facilities

Not less than 50 percent of the water used for the rinsing phase of the wash cycle at automated vehicle wash facilities shall be collected to be reused for the washing phase. Towel and chamois washing machines shall have high-level water cutoffs. Except for water recirculated within the facility, potable and nonpotable water use for automobile washing shall not exceed 40 gallons (151 L) per vehicle for in-bay automatic washing and 35 gallons (132.5 L) per vehicle for conveyor and express-type car washing.
Exception: Bus and large commercial vehicle washing facilities.

702.14 Self-Service Vehicle Wash Facilities

Spray wand nozzles used at self-service vehicle wash facilities shall discharge not more than 3 gpm (11.4 Lpm). Faucets for chamois wringer sinks shall be of the self-closing type.

702.15 Vehicle Washing Facilities

Waste water from reverse osmosis water treatment systems installed in vehicle washing facilities shall discharge to the washing phase water holding tank.

702.16 Food Waste Disposers

The water flow into a commercial food waste disposer in a food establishment shall be controlled by a load-sensing device such that the water flow does not exceed 1 gpm (3.78 Lpm) under no-load operating conditions and 8 gpm (30.2 Lpm) under full-load operating conditions.

702.17 Combination Ovens

Combination ovens shall consume not more than 3.5 gallons (13.25 L) per hour per steamer pan in any operational mode. Water consumption shall be tested in accordance with the requirements of ASTM F 1639.

702.18 Autoclaves and Sterilizers

Autoclaves and sterilizers requiring condensate tempering systems shall be of the type that does not require potable water to be blended with the discharge water to reduce the temperature of discharge.

702.18.1 Vacuum Autoclaves and Sterilizers

Vacuum sterilizers shall be prohibited from utilizing venturi-type vacuum mechanisms using water.

702.19 Liquid Ring Vacuum Pumps

Except where the discharge is contaminated with hazardous materials or pathogens, the discharge water from liquid ring vacuum pumps shall be recovered for reuse within the pump or for other onsite applications.

702.20 Film Processors

The cooling water discharge from water-cooled film processors shall be recovered and reused within the processor or for other onsite applications.

Related Code Sections


Section 702 Water Resource Conservation, Quality and Efficiency, Fixtures, Fittings, Equipment and Appliances
FIXTURE AND FITTING FLOW RATES FOR REDUCED WATER CONSUMPTION FIXTURE OR FIXTURE FITTING TYPE MAXIMUM FLOW RATE Showerhead a 2.0 gpm ...
Green Construction Code 2012 of Maryland > 7 Water Resource Conservation, Quality and Efficiency > 702 Fixtures, Fittings, Equipment and Appliances
702.10 Water Resource Conservation, Quality and Efficiency, Water-Powered Pumps
for the primary pump, the primary pump shall be an electrically powered pump and the water-powered pump shall be equipped with an auditory alarm that indicates when ...
Green Construction Code 2012 of Maryland > 7 Water Resource Conservation, Quality and Efficiency > 702 Fixtures, Fittings, Equipment and Appliances > 702.10 Water-Powered Pumps
702.11 Water Resource Conservation, Quality and Efficiency, Food Service Handwashing Faucets
Faucets for handwashing sinks in food service preparation and serving areas shall be of the self-closing type ...
Green Construction Code 2012 of Maryland > 7 Water Resource Conservation, Quality and Efficiency > 702 Fixtures, Fittings, Equipment and Appliances > 702.11 Food Service Handwashing Faucets
702.12 Water Resource Conservation, Quality and Efficiency, Dipper Wells
The water supply to a dipper well shall have a shutoff valve and flow control valve. Water flow into a dipper well shall not exceed 1 gpm (3.78 Lpm ...
Green Construction Code 2012 of Maryland > 7 Water Resource Conservation, Quality and Efficiency > 702 Fixtures, Fittings, Equipment and Appliances > 702.12 Dipper Wells
702.13 Water Resource Conservation, Quality and Efficiency, Automated Vehicle Wash Facilities
Not less than 50 percent of the water used for the rinsing phase of the wash cycle at automated vehicle wash facilities shall be collected ...
Green Construction Code 2012 of Maryland > 7 Water Resource Conservation, Quality and Efficiency > 702 Fixtures, Fittings, Equipment and Appliances > 702.13 Automated Vehicle Wash Facilities
Help Contact Us Privacy Terms
Search
Search
Don't miss relevant code. Quickly locate sections across your jurisdiction.
Code sheet exports
Code sheet exports
Generate a code sheet that integrates with your drawing set.
Code Compare
Code Compare
Highlight differences between any two building codes.
Code diagrams
Code diagrams
Unpack the code through illustrations and descriptions.
Shared projects
Shared projects
Projects provide a dedicated space to collaborate on code research.
Code Calculators
Code Calculators
Code calculators automatically generate a detailed list of requirements.
UpCodes Premium
Leverage the most sophisticated code compliance platform.
TRY FREE FOR TWO WEEKS VISIT PRICING
UpCodes Premium
Leverage the full code compliance platform.
START 2 WEEK FREE TRIAL LEARN MORE