Water supply is divided into primary water supply and secondary water supply. The primary water supply means that the water from the waterworks is transported to the basements of each community through the tap water pipeline, and the secondary water supply means supplying tap water to the community. The residential water supply you mentioned belongs to the secondary water supply category. Secondary water supply should be divided into regions, direct supply region (that is, the region where municipal pressure can be reached, which can be understood as the region where pressurized water supply is not added), pressurized low region, pressurized middle region and pressurized high region. Pressurized area, each area should use a set of secondary water supply equipment to pressurize the water from the tap water pipeline to the corresponding height. Generally, floors 5-7 should be divided into one area to avoid the excessive pressure difference between each area and the pipeline. According to the water pressure of the water supply pipe network of the local water supply company, the direct supply area has 1 ~7, 8 and 9 floors. Some projects have no direct supply area, and all need equipment pressurization, such as projects halfway up the mountain.
Take a 32-story project as an example, the direct supply 1-4 story, the pressurization and depressurization zone 5- 1 1 story, the middle pressurization zone 12- 18 story, and the pressurization zone 19-25 story are high.