Noida twin towers demolition: How 3,700 kg explosives will flatten the 100-metre-tall illegal structures

Reported By:DNA Web Team| Edited By: DNA Web Team |Source: DNA Web Desk |Updated: Aug 28, 2022, 03:14 PM IST

After a nine-year-long legal battle the Supertech twin towers of Noida were reduced to rubble on Sunday (August 28). The towers Ceyane (29 floors) and Apex (32 floors), which are a part of the Emerald Court project of Supertech Ltd, were demolished since authorities discovered them to be in breach of many construction standards.

The tallest building in India to be demolished, the towers, which included roughly 850 flats and were situated in Sector 93A close to the Noida-Greater Noida Expressway, had a height of almost 100 metres, making them higher than the Qutub Minar.

Preparations included from charging the buildings to clearing the area. Residents of the adjoining apartment buildings ATS Greens Village and Emerald Court had been ordered to leave by Sunday 7 am by the resident welfare association (RWA).

All people and animals were cleared from the designated exclusion zone, which had a 500-metre radius, with the exception of the demolition team members. In addition, the National Disaster Response Force team, eight ambulances, and four fire engines were stationed at the location.

Process of how the demolition took place:

The Supertech towers were destroyed via a “controlled implosion,” in which the structures fell after explosives had been carefully positioned and set off to cause the least amount of collateral harm. The slow deterioration of the building’s essential supports—that is, the removal of the structures that would have helped it resist gravity—was a key factor in the implosion process. This was accomplished by placing a lot of explosives inside the building. The controlled collapse of the building is often started by the explosives on the lowest floors of the structure. 

Around 3,700 kg of explosives were infused into the two towers. Apex had 11 primary blast floors, where all columns on the floor have explosives, and seven secondary floors, where 60 per cent of the columns will be blasted. Ceyane had 10 primary blast floors.

A construction and demolition plant will be utilised to treat the remaining estimated 80,000 tonnes of garbage, left behind after the event. Of this, 50,000 to 55,000 tonnes will be used to fill the site.

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