Why does the residence OF DOMESTIC 7 FLOORS above just install elevator?

Here, let's talk about the benefits of small high-rise buildings. First of all, from the perspective of construction quality, under normal circumstances, the construction standard and construction quality of high-rise buildings are higher than those of multi-storey buildings. Ordinary multi-storey residential general brick concrete structure, and high-rise residential because it is reinforced concrete cast-in-place, the foundation is deep and strong, thick walls, no water seepage, seismic performance is better than multi-storey, the whole building will not sink deformation; And the depreciation life is long.

Let's start with the lower floors, which are usually not attractive to home buyers, especially young buyers. From the first floor to the third floor, people usually live under the canopy of trees, so close to the ground that they can often hear branches beating on their Windows. In terms of psychological comfort, here's Z good; Stay in touch with the outside world. Don't look down at people.

However, the life close to the ground also has disadvantages: the first floor to the third floor is very close to the ground, although the psychological comfort, but the air circulation in the lower level slowed down, shadow and humidity, poor ventilation of the floor area pollution is also more serious. Most people would think that the third floor is the ideal, and it is here that a large number of harmful substances are collected. The fourth and fifth floors are much less hazardous, as they begin to sink or dissipate horizontally.

Some people think that high-rise buildings have fresh air, less noise and beautiful scenery, and this premise is what kind of environment is around the small high-rise buildings where you live. There are no mountains or water around the high-rise buildings, and what you can see is only the "back of the head" of the front building. Can it be said that the scenery is good to "enjoy" various photoelectric pollution of the city? ! Actually a lot of senior living to view himself became the "landscape", let equal across the floor residents leave their home to see connect fully, I don't know this kind of "landscape" let beauty can go in my heart, and the low floor is due to the line of sight dead Angle and ground trees and low buildings block has a good privacy (this must let everybody surprise, but this is the case). When it comes to high buildings and high natural wind, many residents tend to feel that the natural wind is sometimes too big (especially in windy areas and spring and winter seasons), and the air in the high floors is not as fresh as imagined, with large and small chimneys almost surrounding the city.

8-11 layer is the so-called young ash on the environment, the dust and harmful substances in the air has a stay in this highly process, in fact, due to the influence of "canyon effect" (" valley effect "refers to the surrounding public transportation artery or factories, and buildings dense residential), in the street under the action of wind, air containing dust is not smooth, Instead, they "wander" up and down a certain interval between tall buildings.

Pollutants near the ground rise to a certain height with the air flow and then dissipate downward or horizontally. This "height" is about 30 meters or so. That's between 8 and 11 floors. Many compact areas now have a 'pollutant density zone' in the middle of high-rise buildings. To put it bluntly, the dust lingers between the 8th and 11th floors of these buildings, during which the occupants "breathe with it" for a while before kissing it goodbye. And this is a noisy space, many consumers think that living in a tall building can be "far away from the noise", who can think, really in the first floor to listen to vehicle noise, is not as good as in the 8-14 floor to hear the real.

This is because the path of sound waves is related to the number of trees and buildings. The sound usually travels in a Z-short route, and sometimes the noise of the trunk line is heard in the upper floors as well, but sometimes the sound travels freely up to the Windows of the upper floors. Sound waves travel in three dimensions. Upward waves are no weaker than outward waves. Sound waves are stronger in a high-rise building than in a lower building. And BECAUSE LOW floor RECEIVES THE BARRIER FILE OF THE THING SUCH AS LOW BUILDING AND TREE AROUND HOWEVER AND ABSORB AND REDUCED NOISE RELATIVELY, THIS FACTOR ALSO IS NOTS ALLOW TO IGNORE WHEN CHOOSING RESIDENCE.

In China, the higher the floor is often sold more expensive, but experts suggest that when buying a building, the position of six or seven floors 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 discomfort symptoms, especially patients with chronic bronchitis, heart disease, angina pectoris, cardiovascular and cerebrovascular diseases. When choosing high-rise buildings, we should be more careful. In addition, the reinforced concrete structure will force from waves of electrical equipment along the building cycle, quite a few go up, until the top floor, so the senior residents are more likely to have a headache symptoms, second, from a psychological point of view, in the high-level people prone to a sense of "foundation is unstable, often feel depressed. Walking in the high - rise residential area, people will also produce a sense of depression. In addition, living in tall buildings for a long time is also very adverse to children's growth and development, which may lead to their inactivity and closed personality.

The RESIDENCE OF PERSON Z IDEAL STILL SHOULD PRESS CLOSE TO THE GROUND, PRESS CLOSE TO NATURE, THE RESIDENCE Z OF 6 OR 7 LAYERS IS GOOD. Low floors can lead to insufficient light, humidity and slow air circulation. Moreover, cars and asphalt roads can increase the content of formaldehyde, carbon monoxide and nitrogen in the air. When choosing a low floor, it is safe to stay at least 200 meters away from the main road. So, to summarize: The first floor is good: when there is an accident, such as earthquake, collapse, fire, etc., the first floor is the safest floor. In this case, if the outer window is not installed for anti-theft railings, escape from the room on the first floor is simpler. Inferior: THE first floor Z is not quiet, if the street, the car exhaust on the road, dust pollution is the most serious. In some older neighborhoods, moisture returns to basements and mosquitoes are more likely to infect them. In addition, the first floor is also the most vulnerable to theft.

The second floor is better: It is safer than the first floor, especially for families with young children. Inferior: The same as the shortcomings of the first floor, the second floor is also slightly lower.