The most important advantages of wooden structures are their high resistance to various natural disasters (earthquakes, floods and fires). The damping coefficient on the wood makes it the most suitable material for the design of earthquake resistant structures, and also reduces the dead load of the building to seven times its strength compared to steel and concrete structures. In this way, wooden structures can be considered as one of the best earthquake resistant systems.
The many earthquakes that have occurred around the globe have shown that wooden house houses have a unique earthquake resistance.
In the standard of wooden houses, a strong building is called a structure that, after earthquake, is safe and healthy and can be exploited and livable. If in a steel and concrete structure the meaning of a strong building is a house that In the event of an earthquake, it will minimize its injuries.
In the 1994 Northridge earthquake, none of the wooden structures of these schools were seriously damaged. Serious destruction occurred only among the non-wooden components of these buildings. In 2002, the California State Administration decided to revise the construction of concrete and brick structures in California schools because buildings with a lightweight frame had the best resistance against the earthquake.
The Hogukan Nambo earthquake, which occurred in 1995 in Kobe, Japan, left 6800 dead, all of which were in non-wooden houses. There are similar statistics for other earthquakes that have occurred around the globe.
On July 14, 2009, one of the most severe earthquakes in the Mickey Minequake of Japan, on a shattering table, was built on a seven-story building of lightweight, lightweight wooden frame. The magnitude of this earthquake is 7.5 magnitudes, which can occur only once every 2500 years. The earthquake could not destroy the building of seven wooden floors.
The purpose of this test, which is the largest earthquake test of human history, was to challenge the new US regulations that have recently banned the building of seven-story wooden houses in the earthquake-prone areas of America, such as the northern California area. Was.
Most buildings of this height are made of steel or concrete that are not resistant to earthquakes. This test paves the way for building high-rise buildings in the United States.
Currently, in the United States, more than 80% of the administrative and industrial buildings and 90% of residential buildings and 98% of all buildings in California’s quake-stricken state have wooden structures.
Earthquake test to 5.7 magnitude power on a building of seven wooden floors