Retrofitting of existing foundation Using micropile

Abstract

Recently in overpopulated countries building construction is become a problem due to scarcity of land. Day by day this problem is increasing as demand of future construction also increasing. By vertical extension of existing building the demand can be fulfilled. Due to this vertical extension strengthening of existing foundation is required. Micropile technology is one of the best and suitable solutions in this kind of underpinning work. Though the technology is not familiar in Bangladesh, successful implementation of this method will come with a very good result. Various advantages over other underpinning work make it applicable in all type of structural and soil condition. This study has proposed different installation process of micropile technology and its detail design procedure. It also discusses advantages of using this technology for underpinning work. This study is mainly focused on using micropile technology in case of vertical extension of existing structure. Installation of piles through existing foundation and thus strengthening of it also discussed over here. a case study is also shown here analyzing present condition of IUT new academic building and condition after vertical extension. Adequate no of micropiles also calculated with their suitable installation and design process. By this analysis future building construction problem can be minimized and also a different technology about strengthening of existing foundation is introduced.