便笺 购房楼层选择（Memo buying floor selection）

便笺 购房楼层选择（Memo buying floor selection） 便笺 购房楼层选择(Memo buying floor selection) 1. noise Many people think that a high-rise building can "stay away from noise", but in fact, living on the twenty floor is also difficult to avoid noise. The sound is usually transmitted on the shortest route, but the upper level can also hear the noise on the trunk of the bus even louder. This is mainly the sound path, the root, the tree and the building how many relates, the block near the ground, the solid barrier many, but goes to the high-level, because the body block thing is few, the noise can walk upwards freely, listens to also more truly. Noise pollution in the upper and lower layers is not the same as in the form of noise pollution. For the lower level, the noise source is represented by vibrations and sounds. The two is the simplest example of a house on the road. The lower floors are not only able to hear the sound but also feel the shock as it passes by. As for the level of household, the impact will be shaking has been weakened, but at the same time, because of the high environment will be more open, open environment is difficult as low layer effectively cut, to direct sound and sound travels in waves, when a layer height is integer times the noise of the acoustic wavelength, the noise will be evident. In the noise pollution area, the choice of floors depends on the surrounding environment. 2. dust We must try to avoid the 9 to buy 11 layer high-rise residential, because this is just high pollution and dust accumulation height, so the city will form over the dust accumulation zone in that part of the 9 - 11 storey height, if bought this house, indoor air is more vulnerable to pollution. About 30 meters is the stratosphere of the air layer. The suspended particles in the air are mostly concentrated here. In the street under the action of wind, air containing dust is not a smooth move, but an interval between the buildings on the "wandering", with the air pollutants near the ground rises to a certain height and down or horizontal dissipation. And this "height" is about 30 meters, that is, between 9 and 11 layers, said popular point, that is, 9 - 11, is relatively poor air quality floor. The "Canyon effect" around the high-rise buildings is most likely to affect residential buildings located in the middle of the building, with a bus main road or a factory. Under the "Canyon effect", the dusty air stream does not move smoothly, but hovers somewhere up and down between tall buildings". This "height" is about 30 meters. 3. environment From the first floor to the third floor, people usually live under the canopy, close to the ground, and smell the earth and the flowers...... Often listen to the chirping of birds, cicadas, leaves and branches...... To be psychologically comfortable, this is the best. But the life near the ground is also insufficient, the air circulation slows down, the shadow and humidity increase, and the pollution is more serious. Therefore, I argue that if you are a relatively elderly occupant, you can choose 3 - 6 floors, with a natural view, and trees and water are excellent filters that will not allow dust to pass. If it is young people, it is recommended to choose high, do not choose low, choose more than 15 floors, the air is relatively clean, the scenery is also very beautiful. The 6 to the 8 floor is good. I want to take the elevator and take the elevator. I want to climb the stairs and climb the stairs. Because the general ladders is to this position, it is safe, gold floor, in what is happening is not too high, go down quickly. Floor selection is relatively speaking, but also depends on the location of the real estate. If the location of vision, ventilation and lighting conditions are good, should choose a lower housing (6 floors below), from the perspective of human habitation, whether from the psychological or physiological enjoyment is the best. Tall buildings are not the living environment of human needs at last, and they are forced to do so. 4. device The facilities of the building are generally located underground, middle and top. In this regard, the operation of the equipment between the upper and lower levels of the residents will have an impact on life, the impact of the main performance of vibration and sound. In the middle of the main floor is the water supply pressure pumping station, and the elevator room and the central air conditioning air conditioner will be arranged on the top floor. There is no room for removal between these devices. In high-rise buildings, municipal water supply can not meet the building of more than 12 households, therefore it is necessary to set up the pumping station in the middle of residential building, through the water pump the water to the water tank at the top of the life, the use of such 12 or more households with water is through life water tank from top to bottom, thus forming two water supply. 5. conversion layer Modern high-rise buildings develop into multi-functional and integrated applications. On the same vertical line, the top floor is furnished with shops, restaurants, and cultural and recreational facilities on the lower floors of the house. Floors of different uses require different sizes of bays, with different structural forms. Residential buildings require more axis layout, small bay of the upper wall, lower common parts, that are as large as possible free space, with large wall, as little as possible. This arrangement is reasonable, the natural requirements and structure on the contrary, because the structure of the lower floors great stress, normal should lower stiffness, wall, column density, gradually reduced to the upper. In order to meet the requirements of the building function, the structure must be arranged in the opposite way to the conventional way. The upper small space is equipped with a large shear wall, the lower space is large, and the frame column with small rigidity is arranged. Therefore, the transfer floor must be installed on the floor with structural change, called the structural transfer floor. Our residential floor is close to the structural transfer floor. It is a weak layer of structure and also a floor with noise and air pollution.