What floor does the secondary water supply for high-rise buildings start from?
1. Generally, the municipal water supply pressure can only be supplied below the 7th floor (actually, the 7th floor is also pressurized twice), which cannot meet the water supply pressure of high-rise buildings. Therefore, only by installing water supply equipment to improve water supply pressure can water be transported to high-rise buildings. This booster equipment is a secondary water supply equipment. High-rise residential buildings need secondary water supply. What is secondary water supply? Before figuring out this problem, let's take a look at what a high-rise residence is.
2. Generally speaking, houses with seven floors and eaves more than 20 meters high can be called high-rise houses, and high-rise houses can be divided into small high-rise, high-rise and super-high-rise according to the building height. Usually, people refer to buildings with 7-9 floors as middle and high-rise buildings (also known as "small high-rise buildings"), high-rise buildings with 10 floors and above, and super-high buildings with a total height of 100 meters and above. At present, in Huai 'an, small high-rise buildings and high-rise buildings are common high-rise houses.
3. Water supply equipment is an automatic start-stop water supply device that outputs a certain flow and lift in unit time. According to the purpose, it is divided into four categories: fire fighting, life, production and sewage treatment. At present, the most widely used secondary water supply equipment includes non-negative pressure water supply equipment, frequency conversion constant pressure equipment, box-type non-negative pressure water supply equipment and so on.
Water supply equipment without tower and negative pressure shall be selected as far as possible below the 20 th floor, with small floor space, no secondary pollution, electricity and energy saving, small overall investment and low operating cost. Generally, frequency conversion and constant pressure water supply is used for more than 20 floors, and tower-less negative pressure water supply can be used for less than 20 floors. Constant pressure is the water tower and water tank, which belongs to the rising and falling water supply mode. The water supply mode without negative pressure is directly connected with the tap water pipe network and subordinate to rising.
5. From which floor should secondary water supply be selected? The size of secondary pressurized water supply equipment depends on the actual situation. If the number of people is large and the water consumption is large, we should use a larger one. On the contrary, if the number of people is small and the water consumption is small, you can use a smaller one. In addition, it should be selected according to the height of the building, the size of the installation location and its own economic situation. In short, all sizes can achieve the purpose of automatic water supply, but the small ones have more pump-on times than the large ones. If the actual situation permits, try to choose a larger one.
High-rise buildings generally start secondary water supply from more than twenty floors. There is no need for secondary water supply for floors below the twentieth floor, and the water pressure for floors above the twentieth floor is generally insufficient. The secondary water supply of high-rise buildings generally needs some pressurization equipment, but the water supply from which floor depends mainly on the local actual situation. In some places, the water pressure is low and water is scarce, so they may provide secondary water supply from lower floors. In some places, the water pressure is relatively high, and secondary water supply can be carried out from buildings with more than 20 floors.
(The above answers were published on 20 17-05-03. Please refer to the current actual purchase policy. )
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