ABSTRACT
Delayed detonation techniques by implosion is successfully used in many countries for demolition of high rise structures in heavy urban and densely populated areas without inducing damages to neighboring structures. This paper deals with engineering challenges behind demolition by implosion technology of Supertech Twin Towers at New Delhi, India. After completing 32 floors of Apex and 29 floors of Ceyane tower, work was stopped in 2014 for violating building norms. Buildings were brought down by controlled implosion on 28th August 2022 as per the Supreme Court verdict. The towers were surrounded by numerous adjacent multistoried apartments and a buried gas pipeline passing within the plot of Supertech twin towers. Bringing the building down within the plot without affecting the built environment was the major challenge. After detailed engineering analysis, proper instrumentations, safety measures to prevent flying debris and to control touch down vibration, the demolition was successfully completed.
