How much do you know about the advantages and disadvantages of super high-rise residential buildings?

Good view and good air. The sight and air of high floors are good, the noise is gradually decreasing, and the air quality is gradually improving. Generally speaking, above the 12 layer, the influence of noise gradually decreases and the air quality gradually improves. People who live above can't feel the air clearly.

Daylighting stick, well ventilated. Good lighting and ventilation, super high-rise residential buildings can enjoy the warmth of the sun. "Warm in winter and cool in summer" depends on the design of the apartment and the care of the landlord, but "cool in summer" is certain, because the ventilation of super high-rise buildings is definitely better than that of ordinary floors.

Low noise and pollution. The pollution of high floors is relatively small, the room is dry and clean, and it is easy to maintain hygiene. At the same time, the noise of the building is small and less. Generally, the noise of each floor will be reduced by about 10 dB.

The harm is almost zero. There are fewer mosquitoes and mice, and there are basically no mosquitoes and mice above 20 floors.

The construction cost is high. Buildings must use advanced building materials and construction technology, and the cost is high, and the daily management cost is not low, so some high-rise buildings with high vacancy rate are overwhelmed. In addition, it affects the urban landscape, causing light pollution and many environmental problems.

It is very inconvenient to use. There are many workers in super-high-rise buildings, so you have to change elevators in the middle of the floor to get to the top floor. If the elevator breaks down, it will bring more trouble to the residents. The commuting summit will cause floor congestion, and there will also be a peak of people and traffic around the super high-rise. In case of water and power failure, the elevator will be annoyed.

The elevator speed is too fast. This may cause discomfort, especially if there are old people and children at home. In order to meet the fire regulations, high-speed elevators are usually used in super-high-rise residential projects. For example, at present, some projects have adopted elevators running at a speed of 4 meters per second, which can be controlled within 60 seconds from the third floor underground to the 60th floor above ground.

The elevator is very expensive. Residents living in high-rise buildings will have longer elevator waiting time and ride time during peak hours; Regarding the charging standard of elevator sharing electricity fee, some property companies implement the standard of all floor users 1, but some companies implement segmented charging. At present, the cost of high-rise elevators generally starts from the third floor, and each additional floor will increase the elevator cost by about three yuan.

The usable area is reduced. Because the thickness and usable area of shear wall are relatively reduced, and the low-rise unit of the building is affected by the increase of load, the thickness of shear wall will increase accordingly. Some buildings will design shear walls at locations that do not affect the actual use of space in apartment design.

Fire safety issues. Fire-related facilities, ladders can only go to the 30th floor. On the one hand, it is the fire ladder truck outside the building, which can reach the height of 28 floors at present. In the face of fire, it is difficult for residents above this height to get help with the external fire escape. The fire elevator inside the building is required to go from the lower floor (including the underground floor) to the upper floor, and the running time from the lower floor to the top floor should not exceed 60 seconds.