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ABSTRACT

Application of base isolation techniques in Iran goes back to hundreds of years ago and even to ancient times. Installing pieces of wood between the foundation and the walls of buildings is among the earthquake resistant construction techniques that have been applied in some areas of Iran in the past. However, contrary to other technologies which are generally adapted soon after their development, modern seismic base isolation technology took almost a quarter of a century to be adapted and utilized in Iran. This paper presents the historical as wells as the modern application of seismic base isolation technology in Iran.

1 INTRODUCTION

Iran is located in an active seismic area and we frequently observe heavy casualties and damages due to destructive earthquakes. Therefore, people have tried to cope with this natural hazard using different techniques throughout the history. Application of base isolation concept is one of the techniques that have been used in some areas of the country in the past. However, modern base isolation technology was not used in Iran until very recently. One important reason for the long delay can be referred to the fact that it is difficult to change the mentality of the builders from their current way of construction to a newly developed technology. However, this can be acceptable to some extend, as it is human nature to resist against change, and life would certainly be easier if engineering practices and building construction remained unchanged. We should note that advances in earthquake engineering and the construction practice that follow are as dynamic as the world we live in. In order to use the latest technology and ensure highest level of safety in the built environment, it is imperative that the design and construction communities utilize the most current technologies available.2 BASE ISOLATION TECHNOLOGY IN IRAN 2.1 Historical Structures Study of historical structures in Iran show that some base isolation techniques had been utilized to reduce seismic impacts on some types of structures throughout the hi

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