According to United Nations data, nearly 200,000 people around the world move to cities every day; the only way to cope with urban population expansion is to grow high up. Major cities are actively building skyscrapers. Under the new technology and construction technology, developers all advertise the new generation of skyscrapers as very safe, but can these new buildings be able to cope with the challenges of fires, typhoons, earthquakes and other disasters? fire After the global economy recovered from the 2008 financial crisis, there has been a trend in wealthy cities building supertall towers in their city centers. In most cases, high-rise buildings have a first-class safety record,
but the engineering and architectural concept may not be perfect. In the event of a fire, the consequences can be disastrous, especially in older high-rise buildings that lack communication systems and fire sprinklers. The chief of the special operations commander of the New York Fire Department of the United States pointed out that in the event of a fire in a building, the general guidance of the authorities is that unless there is an immediate threat to life, wedding photo retouching services citizens should stay in place, because dark, smoke-filled stairs are more dangerous; lifts are also easy malfunction, increasing the risk of death. In recent years, a new generation of fire-fighting elevators that are surrounded by confined spaces, prevent smoke from entering, and are equipped with drainage equipment have been introduced; and most of the high-rise buildings constructed in recent years have been forced to install fire sprinklers, effectively reducing the number of fire-related casualties. There are still concerns about old buildings. 2_High_Rise Old-style high-rise buildings lack public address systems and fire sprinklers.
Once a fire occurs, serious casualties will be caused. earthquake Another terrible natural disaster that threatens tall buildings is earthquakes. The U.S. Geological Survey said that there is a 70% chance of a major earthquake in San Francisco in the next 30 years; geologists pointed out that there are 7 major faults in the San Francisco Bay Area, of which the San Andreas Fault and the Hidden Fault are the most worrisome worry. Experts pointed out that in the event of an earthquake, fragile stone structures are most likely to collapse. Even the most secure steel-framed high-rise buildings will collapse due to fractured welding positions, poor soil conditions, and poor building materials. Take the Kobe earthquake in Japan in 1995 and the Christchurch earthquake in New Zealand in 2011, for example, which caused hundreds of thousands of buildings to collapse and cause heavy casualties.