Demolition of Supertech Twin Towers: Test blast carried out by Noida Authority

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A test blast to level the illegal Supertech Twin Towers in Noida was successfully carried out on Sunday afternoon. The test explosion was carried out at around 2:30 p.m. at the company in Sector 93-A, Noida.

A siren lasting a few seconds goes off at 2:15 p.m. followed by two to three sirens at 2:30 p.m., moments before the first attempt.

Edifice Engineering and Jet Demolitions have been enlisted by the Noida Authority to demolish the Supertech Twin Towers.

The test explosion was carried out with five kg explosives in the Apex Tower. This took place to determine the amount of explosives, which would be required during the actual demolition of the two towers on May 22.

The Supreme Court had ordered Supertech’s Apex (100m) and Ceyane (97m) to be demolished on August 31 last year because the twin towers had been built in breach of construction standards.

The higher court had also struck down the local authority of Noida for the approval of the project under its supervision.

The implosion only takes 9 seconds

Up to four tons of explosives could be used to level the Supertech Twin Towers and the implosion of the nearly 100-meter-tall structures on May 22 would take just nine seconds, according to previous reports.

Additionally, about 1,500 families living in the immediate vicinity of the towers in Sector 93A would be displaced from their homes for about five hours when the implosion takes place at 2:30 p.m. on May 22.

A section of the Noida-Greater Noida highway near the site would also be closed to traffic for an hour, while security personnel would be deployed to the area in large numbers during the day, according to the demolition plan shared by Edifice. Engineering.

Sharing a presentation with the media on Monday, Edifice partner Utkarsh Mehta said Ceyane (31 floors) will collapse to the ground first, followed by Apex (32 floors).

“The building will fall inwards in stages, floor by floor. Ten levels will serve as primary blast stages and seven as secondary blast stages. Main blast floors will have explosives in all columns. In the secondary floors, the explosives will be in 40% of the columns,” Mehta said, explaining the technical aspects of the process.

The company previously demolished the 108-meter-tall Bank of Lisbon in Johannesburg, South Africa, in 2019 with an implosion.

The gap between the structure and an adjacent building was about seven meters, while in Noida the gap is about nine meters, officials said.

Jet Demolition, based in South Africa, provides blast expertise for a safe implosion and a test blast would take place before the actual implosion.

“Explosives between 2,500 kg and 4,000 kg will be required. A test firing is planned for the last week of March or the first week of April to optimize the use of explosives vis-à-vis security measures” , Mehta said.

Residents of the exclusion zone (the radius of the explosion) will be asked to leave at least three hours before the implosion and they can return at least two hours after the action.

The exclusion zone includes the whole of Emerald Court, the nearby village of ATS Greens and parts of Parsavnath Prestige, a park and the road in front of the towers as well as part of the Noida highway.

Traffic on the highway would be interrupted for an hour, even as security personnel, including police, would be deployed in the area.

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