GB 50015-2019 第3.2.1条
| The hotel domestic water supply system should make full use of the municipal water supply network pressure; when the municipal network pressure is insufficient, booster equipment should be provided. The vertical zoning of the water supply system should be determined based on factors such as the number of building floors, usage requirements, and equipment and material performance. The hydrostatic pressure at the lowest sanitary fixture outlet in each zone should not exceed 0.45 MPa and must not exceed 0.55 MPa.