High rise buildings: Which floor has the best air

When it comes to several layers of good air, I first want to talk about a concept, that is, the so-called "ash layer" that everyone often considers when buying a house, and it has been rumored on the Internet that "9 to 11 floors are ash layers, and you can't buy them", in fact, this statement is wrong, whether it is PM10 "ash" particles, the closer to the ground floor, the higher the concentration. Physics experts say that at a height of thirty or forty meters above the ground, the dust does not stop. Therefore, now the general high-rise buildings do not have a gray floor, it is recommended to choose a floor, try to choose a floor that suits you.

When choosing a floor, we will also consider from one angle, that is, noise, many people think that the lower the floor, the louder the noise, in fact, the noise is propagated upward, and the noise is the largest between 30 and 70 meters. The low floor has low noise, green belts and street trees can reduce noise, and the most important thing is that low floors only receive close noise. Secondly, "the higher the floor, the wider the range of received noise, and the long-distance traffic noise can be transmitted to the high-rise", such a statement is also incorrect, generally above the 5th floor, the noise decibel will increase with the increase of the floor, and when the floor is higher, the noise decibel will decrease.

Generally speaking, the noise is highest on the 5th to 24th floors, with the highest increase from the 11th to 22nd floors, and the decrease above the 30th floor.

In terms of selling price, it is generally expensive in the middle, and cheap in the lower and highest tiers. Let's talk about the pros and cons of each floor. Bottom Floor Pros:

In the event of accidents, collapses, fires, etc., the first to third floors are the safest floors. It can escape quickly, which is more convenient for families with the elderly and children, and reduces the inconvenience of climbing floors. Some have gardens.

Disadvantages: the lighting is weak, it may also be disturbed by noise, the noise generated by people and cars in the community, if it is facing the street, it is most polluted by car exhaust and dust. If the bottom floor is not high, the humidity is high, the ventilation is relatively weak, and it is susceptible to mosquito infestation.

The ground floor is also vulnerable to burglary.

2nd to 7th floors Advantages: suitable for middle-aged and elderly people, families with children, easy to access, no need to worry about elevator maintenance or power outages, relatively easy to take the stairs. If you face the atrium, you can see the landscape of the community.

Like the ground floor, it is a safe floor, and the escape is faster. Disadvantages: It has similar problems as the ground floor, the air circulation is slowed down, it may not be quiet, and it is more prone to theft, and anti-theft measures must be considered.

8 to 16 floors Advantages: suitable for all ages and families, with better ventilation, lighting, vision, less affected by car exhaust, dust, etc., and the air is also more circulating, giving people a more down-to-earth living feeling. It is ideal for people who want a good vision but are afraid of heights.

Disadvantages: If you are facing the street, the surrounding high-rise buildings are prone to form echo walls, but there is more noise. Although the field of vision is relatively broad, it is often blocked, and it is not easy to see the green landscape of the community.

When buying a building, the location of the sixth or seventh floor is the best, first of all, from the perspective of air quality, the air quality is worse if the height is more than 30 meters. Moreover, the air in the upper floors is relatively thin, and people with certain diseases are prone to uncomfortable symptoms, especially patients with chronic bronchitis, heart disease, angina, and cardiovascular and cerebrovascular diseases. In addition, the reinforced concrete structure will force the radio waves from electrical equipment to circulate along the building, a considerable part of which is going up to the top floor, so high-rise residents are more likely to have headaches, and secondly, from a psychological point of view, people in high-rise buildings are prone to a feeling of "unstable foundation" and often feel depressed.

Walking in a community full of high-rise buildings, people can also feel depressed. In addition, living in a high-rise building for a long time is also very detrimental to children's growth and development, which may lead to their lack of activity and closed personality.

In fact, due to the influence of the "canyon effect" (the "canyon effect" refers to the surrounding bus roads or factories, as well as high-rise dense residences), under the action of street wind, the airflow containing dust is not moving smoothly, but "wandering" up and down in a certain interval between high-rise buildings.

There is science to say that the air quality on the 8th-11th floors of high-rise buildings is poor.

In fact, due to the influence of the "canyon effect" (the "canyon effect" refers to the surrounding bus roads or factories, as well as high-rise dense residences), under the action of street wind, the airflow containing dust is not moving smoothly, but "wandering" up and down in a certain interval between high-rise buildings.

Pollutants near the ground rise to a certain height with the airflow and then dissipate downward or horizontally. This "height" is about 30 meters. That is, between the 8 and 11 floors.

To put it bluntly, dust lingers between the 8th and 11th floors of these buildings, during which the occupants "breathe and share the same fate" with the dust for a period of time before "kissing goodbye". And this is a noisy space, many consumers think that they can "get away from the hustle and bustle" by living in a high-rise building, who would have thought that really listening to the noise of vehicles on the first floor is better than listening to it on the 8th and 14th floors.

Attention should be paid to the selection of floors:

1. Consider the situation of family members.

When choosing a floor, the first thing to consider is the situation of the family members. If there are elderly people in the family, it is not advisable to choose a floor that is too high. Nowadays, most houses are designed with floor-to-ceiling windows or bay windows, and some elderly people are prone to dizziness if they look down through the windows.

If there are children in the house, then the floor-to-ceiling windows or bay windows need to be equipped with guardrails, which affects the aesthetics.

2. The cost of buying a house should be considered.

As we all know, there is a close relationship between floor and house price, the higher the floor of the same building, the higher the unit price of the house. In the case of high cost of buying a house, the total price of the same building and the same type of house may vary greatly. Therefore, it is important to consider the cost when buying a house.

3. Avoid noise pollution.

Noise pollution has become one of the most important sources of pollution affecting people's normal life. For buildings that are close to the main road or the entrance and exit of the underground garage, it is important to avoid noise pollution when choosing floors.

According to the characteristics of noise propagation and the presence or absence of obstructions, the noise received by the building is as follows: the middle floor is the most noisy, and the lower and upper floors receive less noise.

Physically speaking, the 9 and 11 layers are the poplar ash layer, and the dust can't go up to this level. So 9 and 11 floors are not good. Of course, it is impossible to buy a house and want to be perfect, but it is possible to buy it cheaply, and it is not impossible to buy it if it is cheap.

If you're in a good position, don't think about this floor.

The above is right, in fact, according to different regions, the dust layer is also distinguished, and the general layer below can be called the gray area 16-25 layers are the most appropriate, hehe, experience talk, for reference.

It's all okay on the 26th floor of my house. Huh

Please refer to below.

What is the best floor for a high-rise house?

1. Lighting time: With the higher the floor, the longer the sunshine and the better the lighting, try to choose more than one-third of the floor.

Although every unit built by the developer meets the national sunshine standard, many of the units have sunshine standards.

It is only designed according to the minimum standard (1-2 hours of sunshine a day), which can not meet the daily sunshine needs of buyers, especially in today's sunshine where sunlight is so scarce, and sufficient lighting is already the standard configuration of a high-quality house.

However, there is no way for buyers to calculate the amount of daylight they are buying for their units, because calculating the amount of daylight for each unit is a very complex process that involves building spacing.

Floor height, sun angle.

and other factors, developers need to rely on professional computing software to complete, and it is basically impossible for buyers to calculate clearly.

National sunshine standards.

However, buyers can use the simplest way to choose, because the sunshine duration is increased according to the floor, that is, the higher the floor, the longer the sunshine, about more than one-third of each high-rise building can ensure sufficient sunshine time, if the buyer is very interested in lighting, try to choose more than one-third of the floor, that is to say, 33 floors choose more than 11 floors, 18 floors choose 6 floors or more, 11 floors choose 4 floors or more.

In this way, even if the buyer cannot calculate the sunshine time of the house, it can still ensure that the house has enough sunshine.

2. Noise pollution.

Noise pollution increases with the increase of floors, so try to choose low-floor houses to avoid noise.

1. The higher the floor, the greater the noise pollution, and only the noise pollution source is close and the noise on the floor above 26 floors will be attenuated.

The source of the noise is located in high-rise residential buildings.

In more recent cases, noise pollution will only diminish layer by layer above 26 floors.

If the noise source is far away from the high-rise residential building, the noise pollution will only increase with the higher the floor.

2. The higher the floor, the more noise sources, and there are no obstacles to weaken the noise sources.

3. Air pollution: There is no ash layer on the 9-11 floors.

But it will occur under certain circumstances"The canyon effect.

Fourth, daily convenience: the elevator on the high floor has a high cost and low water pressure.

1. The high floors are used for a long time during the peak period of the elevator, and it is inconvenient to travel for maintenance.

2. The water pressure on the upper floors is relatively low, and it is inconvenient to use it during the peak water consumption period.

To sum up: it is recommended to buy a house with a middle floor, which basically avoids various disadvantages.

1. From the perspective of lighting, try to buy more than one-third of the floor.

2. From the perspective of noise: try to buy low-rise residences.

3. From the perspective of air pollution: in areas with many high-rise buildings, do not buy 9-11 storey residences.

4. From the perspective of daily convenience: try to buy a low-rise residence.

For high-rise residential buildings, 7 or 8 floors are better floors. This floor is quiet, unaffected by car exhaust, etc., and does not make people afraid of heights.

Generally speaking, the air quality on the 6th to 10th floor, or 15th to 24th floor, is very good.

I want good air. Then choose the upper floor. Or a house close to the sea.

With the social and economic development of our country, whether it is a big city or a small county, there are more and more high-rise residential buildings, many people have moved into high-rise buildings to live, and many citizens are holding coins and watching. There is a very important consideration when buying a high-rise residence, which is a problem of air quality, in fact, in terms of air quality and cleanliness, the air on the upper floors is generally better than that on the ground floor, because there are cars and people on the ground, and the dust raised is naturally easy to pollute the ground floor residences, while on the high floors it is difficult to be affected.

The air at the upper floor is generally better than the air at the bottom, and the main criteria for reference are generally whether there are many suspended solids and dust particles in the air, and whether there is any peculiar smell. The suspended particles, dust and odor in the air basically come from the ground, so the bottom floor of high-rise residential buildings is the first to be polluted, because the bottom layer is closest to the ground, and the dust raised by cars when driving, the dust raised by sanitation workers when sweeping the floor, and the odor emitted by garbage are difficult to avoid at the bottom layer. The suspended particles in the polluted air have a slight weight, so they will gradually settle when they float to a certain height, and the concentration of these suspended particles will generally be reduced on floors above 10 meters above the ground, and there will be fewer suspended particles on higher floors, and the air will be better.

Therefore, considering the quality of the air alone, the upper floors must have an advantage over the lower floors.

The air in the high-rise is thin In the city, the dust layer of the air is generally between 20 and 35 meters lower than that of high-rise residences, and the dust in the air is generally less and the quality is relatively better on the floors higher than 35 meters. However, there is also a disadvantage for high floors in the air, that is, the higher the floor, the thinner the air, and the corresponding reduction in oxygen content, which is nothing for normal people in good health, but for some elderly people, as well as people with bronchitis, cardiovascular and cerebrovascular diseases or heart disease, it is not friendly enough, and it is easy for them to have uncomfortable symptoms. Therefore, if there are relevant patients or elderly people at home, it is best to choose a floor that is too high, and consider the inconvenience of living above.

Advantages and disadvantages of high floorsThe advantages of high floors are generally better lighting, ventilation and air, wide vision, and in some places, you can also see the distant sea and mountain views; The disadvantage is that the air is a little thin, the thermal insulation performance is poor, it will be hotter in summer, the wind on the high-rise building will be greater in windy weather, and the ** on the high-rise floor in many cities is relatively expensive. In addition, the high floors are not suitable for people with fear of heights, standing on the balcony and looking down may be scary, and the higher you live, the less you will intersect with the ground, which will also make people feel a certain sense of depression.