GB 50015-2019 第5.3.3条
| Rainwater reuse system: the annual runoff total volume control rate shall not be less than 55%, and the effective volume of the rainwater collection tank shall be calculated at 3-5 times the daily water consumption. |
| Rainwater reuse system: the annual runoff total volume control rate shall not be less than 55%, and the effective volume of the rainwater collection tank shall be calculated at 3-5 times the daily water consumption. |
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