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M 102.3 Meter and Building Supply
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To determine the design flow rate for the water meter and building supply, enter the total number of indoor plumbing fixtures and appliances for the building in Column [B] of the Water Demand Calculator and run Calculator. See Table M 102.3 for an example.
TABLE M 102.3
WATER DEMAND CALCULATOR EXAMPLE
WATER DEMAND CALCULATOR EXAMPLE
| [A] FIXTURE | [B] ENTER NUMBER OF FIXTURES | [C] PROBABILITY OF USE (%) | [D] ENTER FIXTURE FLOW RATE (GPM) | [E] MAXIMUM RECOMMENDED FIXTURE FLOW RATE (GPM) | |
|---|---|---|---|---|---|
| 1 | Bar Sink | 0 | 2.0 | 1.5 | 1.5 |
| 2 | Bathtub | 0 | 1.0 | 5.5 | 5.5 |
| 3 | Bidet | 0 | 1.0 | 2.0 | 2.0 |
| 4 | Clothes Washer | 1 | 5.5 | 3.5 | 3.5 |
| 5 | Combination Bath/Shower | 1 | 5.5 | 5.5 | 5.5 |
| 6 | Dishwasher | 1 | 0.5 | 1.3 | 1.3 |
| 7 | Kitchen Faucet | 1 | 2.0 | 2.2 | 2.2 |
| 8 | Laundry Faucet | 0 | 2.0 | 2.0 | 2.0 |
| 9 | Lavatory Faucet | 1 | 2.0 | 1.5 | 1.5 |
| 10 | Shower, per head | 0 | 4.5 | 2.0 | 2.0 |
| 11 | Water Closet, 1.28 GPF Gravity Tank | 1 | 1.0 | 3.0 | 3.0 |
| 12 | Other Fixture 1 | 0 | 0.0 | 0.0 | 6.0 |
| 13 | Other Fixture 2 | 0 | 0.0 | 0.0 | 6.0 |
| 14 | Other Fixture 3 | 0 | 0.0 | 0.0 | 6.0 |
| Total Number of Fixtures | 6 | RESET | RUN WATER DEMAND CALCULATOR | ||
| 99th Percentile Demand Flow = | 8.5 GPM | ||||
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