// CODE SNIPPET
604.10.1 Manifold Sizing
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Hot water and cold water manifolds shall be sized in accordance with Table 604.10.1. The total gallons per minute is the demand of all outlets supplied.
MANIFOLD SIZING
| NOMINAL SIZE INTERNAL DIAMETER (inches) | MAXIMUM DEMAND (gpm) | |
| Velocity at 4 feet per second | Velocity at 8 feet per second | |
| 1/2 | 2 | 5 |
| 3/4 | 6 | 11 |
| 1 | 10 | 20 |
| 11/4 | 15 | 31 |
| 11/2 | 22 | 44 |
For SI: 1 inch = 25.4 mm, 1 gallon per minute = 3.785 L/m, 1 foot per second = 0.305 m/s.
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