Division B
Acceptable Solutions
Part 10 — Energy and Water Efficiency
Section 10.3. Water Efficiency
10.3.1. Design and Installation
10.3.1.1. Fixture Fitting Maximum Flow Rates
1) The flow rates of fittings that supply water to plumbing fixtures must not exceed
the maximum flow rate at the test pressures listed for that fitting in Table 10.3.1.1.
| Table 10.3.1.1. Maximum Flow Rate Forming part of Sentence 10.3.1.1.(1) | ||
| Fittings | Maximum Flow (L/min) | Test Pressure (kPa) |
| Lavatory Faucet | 8.3 | 415 |
| Kitchen Faucet | 8.3 | 415 |
| Shower Head | 9.5 | 550 |
10.3.1.2. Fixture Efficiency
1) 
Except as required by Sentence 10.3.1.2.(2),
the flush cycle for the installation of a water closet or urinal must not exceed the flush cycle listed for that fixture in Table 10.3.1.2.(1)
Except as required by Sentence 10.3.1.2.(2), the flush cycle for the installation of a water closet or urinal must not exceed the flush cycle listed for that fixture in Table 10.3.1.2.(1)| Table 10.3.1.2.(1) Maximum Flush Cycle Forming part of Sentence 10.3.1.2.(1) | |
| Fixture | L |
| Water Closet (Tank Type) | 6.0 |
| Water Closet (Direct Flush) | 6.0 |
| Urinal (Tank Type) | 1.9 |
| Urinal (Direct Flush) | 1.9 |
2) The flush cycle for the installation of a water closet or urinal in a Group C residential occupancy must not exceed the flush cycle listed for that fixture in Table 10.3.1.2.(2).
The flush cycle for the installation of a water closet or urinal in a Group C residential occupancy must not exceed the flush cycle listed for that fixture in Table 10.3.1.2.(2).| Table 10.3.1.2.(2)Maximum Flush Cycle Forming part of Sentence 10.3.1.2.(1) | |
| Fixture | L |
| Water Closet (Tank Type) | 4.8(1) |
| Water Closet (Direct Flush) | 4.8 |
| Urinal (Tank Type) | 1.9 |
| Urinal (Direct Flush) | 1.9 |
| Notes to Table 10.3.1.2.(2): | |
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| (1) | A water closet with a dual flush cycle of 4.1 L or less and 6.0 L complies with this requirement. |
3) The water supply to urinal flush tanks equipped for automatic flushing shall be controlled
with a timing device in order to limit operation to the period during which the building
is normally occupied.