Disaster Prevention Planning and Disaster Preparedness for Earthquake

摘要

1. There are differences between earthquakes and other natural disasters: (1) Enormous damage; (2) Occurrence of a very short time (as much as a few seconds) to allow the deal to eliminate; (3) Destruction of vast areas, sometimes hundreds of square kilometers covers; (4) Threats of aftershocks, which often takes more than one year. 2. Causes of loss and damage in Iran: (1) Increasing number of cities in Seismic areas; (2) Uncontrolled development of cities, so many faults in urban areas have been; (3) The city's population density increased the number of earthquake victims; (4) Increase the quality and quantity of municipal installations and facilities increasing financial losses due to earthquake; (5) Despite the lack of planning for placement in seismic active regions of the world, While the earthquake is much more than building blocks. City Form, The spatial distribution. Spatial and landuse compatibility and performance of building systems, appropriate network access and efficient hull design of streets and city views, open space ratio of width to height distribution are effective in reducing the vulnerability of the earthquake.