From which floor does the high-rise residence start secondary water supply?

High-rise secondary water supply starts from the seventh floor, and our national regulations are to ensure water supply on the sixth floor. The pressure of municipal water distribution (tap water) pipe network is only guaranteed to be below six floors, and more than seven floors (including seven floors) need secondary pressurized water supply.

China's Code for Design of Outdoor Water Supply (GB500 13-2006) stipulates that the water supply of six floors is guaranteed, that is to say, the pressure of municipal water distribution (tap water) pipe network is only guaranteed to be below six floors (including six floors), so the water supply of more than seven floors (including seven floors) must be pressurized twice.

Extended data

Secondary water supply equipment is generally located on the ground or in the basement. Units with running water can use this equipment to dispatch peak water and increase water pressure, which can meet the needs of large-scale water use and high-rise water use during peak water use. Units, factories or villages without running water can obtain stable water quantity and pressure to meet the water demand only by connecting the equipment to the water source power supply.

The secondary water supply equipment consists of three parts: air pressure tank, water pump and electric control system. Its outstanding advantages are: no need to build a water tower, less capital investment, less land occupation, flexible organization and quick completion and production. Choose automatic dispatching, automatic operation, energy saving and automatic grid connection of tap water, which can still supply water after power failure and need not be on duty after debugging. Widely used in enterprises, residential areas without vertical towers and rural areas for production, living and operation of water supply. Suitable for places with less than 5000 water supply households and daily water supply less than 3000m3, and the water supply height is greater than 100m.

Baidu encyclopedia-secondary water supply