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// CODE SNIPPET

1503.8.2 Commercial, Industrial, and Lnstitutional Occupancies

California Plumbing Code 2019 > 15 Alternate Water Sources for Nonpotable Applications > 1503.0 Gray Water Systems [BSC-CG] > 1503.8 Procedure for Estimating Gray Water Discharge > 1503.8.2 Commercial, Industrial, and Lnstitutional Occupancies
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The Authority Having Jurisdiction may utilize the gray water discharge procedures listed below, water use records or other documentation to estimate gray water discharge.

1503.8.2.1 Lavatories

Daily discharge from lavatories may be determined by the following equation:

Occupants X lavatory flow rate X 3 (Equation 15.1)


Where:
The number of occupants = square footage of the building divided by the occupant load factor from the California Plumbing Code Chapter 4, Table A.

Lavatory fixture flow rate, new construction = That from the California Green Building Standards (CALGreen) Code Section 5.303.2.3

Lavatory fixture flow rate, existing fixtures= Actual flow rate for existing fixtures

3 = Average number of uses per person per day

1503.8.2.2 Showers

Daily gray water discharge from showers may be determined by the following equation:

Number of daily uses X shower flow rate X 5 minutes (Equation 15.2)

1503.8.2.3 Commercial Clothes Washers

Daily gray water discharge from commercial clothes washers may be determined by the following equation:

Cubic feet of capacity X Water Factor X 6 (Equation 15.3)


Where:
Water Factor= Gallons per cubic foot
6 = Average number of uses per day

Note: Cubic feet of capacity and Water Factor are contained in product specifications or are available from the washer manufacturer.

Related Code Sections


1503.8.2 Alternate Water Sources for Nonpotable Applications, Commercial, Industrial, and Lnstitutional Occupancies
lavatories may be determined by the following equation: Occupants X lavatory flow rate X 3 (Equation 15.1) Where: The ...
California Plumbing Code 2019 > 15 Alternate Water Sources for Nonpotable Applications > 1503.0 Gray Water Systems [BSC-CG] > 1503.8 Procedure for Estimating Gray Water Discharge > 1503.8.2 Commercial, Industrial, and Lnstitutional Occupancies
914.3.1 Installation of Specific Appliances, Industrial or Commercial Occupancies
Non-recirculating direct gas-fired industrial air heaters shall be installed only in industrial or commercial occupancies. [NFPA 54:10.8.3.2] ...
California Mechanical Code 2019 > 9 Installation of Specific Appliances > 914.0 Non-Recirculating Direct Gas-Fired Industrial Air Heaters > 914.3 Installation > 914.3.1 Industrial or Commercial Occupancies
1502.8.2 Alternate Water Sources for Nonpotable Applications, Commercial, Industrial, and Institutional Occupancies
lavatories may be determined by the following equation: (Equation 15.1) Occupants X lavatory flow rate X 3 Where: The number ...
California Plumbing Code 2016 > 15 Alternate Water Sources for Nonpotable Applications > 1502.0 Gray Water Systems [BSC-CG] > 1502.8 Procedure for Estimating Gray Water Discharge > 1502.8.2 Commercial, Industrial, and Institutional Occupancies
1012.0 Traps and Interceptors, Commercial and Industrial Laundries
Laundry equipment in commercial and industrial buildings that do not have integral strainers shall discharge into an interceptor having a wire basket ...
California Plumbing Code 2019 > 10 Traps and Interceptors > 1012.0 Commercial and Industrial Laundries
1012.0 Traps and Interceptors, Commercial and Industrial Laundries
Laundry equipment in commercial and industrial buildings that does not have integral strainers shall discharge into an interceptor having a wire ...
California Plumbing Code 2016 > 10 Traps and Interceptors > 1012.0 Commercial and Industrial Laundries
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