Supertech Twin Towers Demolition: Test Blast by Noida Authority

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

The Supreme Court had on August 31 last year ordered the demolition of Apex (100 metres) and Sien (97 metres) of Supertech as the two towers were constructed in violation of building norms.

The top court had also pulled up the local Noida authority for sanctioning the project under its supervision.

Implosion will take only 9 seconds

Up to four tonnes of explosives can be used to bring down the Supertech twin towers and it would take only nine seconds for the nearly 100-metre-tall structures to detonate on May 22, according to earlier reports.

In addition, around 1,500 families living close to the towers located in Sector 93A would be thrown out of their homes for about five hours if the blast took place at 2.30 pm on May 22.

According to the demolition plan shared by Edifice Engineering, a part of the Noida-Greater Noida Expressway close to the site will also remain closed for traffic for an hour while a large number of security personnel will be deployed that day.

Utkarsh Mehta, Partner, Edifice, while sharing a presentation with the media on Monday said that Cayenne (31st floor) will fall to the ground first and then Apex (32th floor).

“The building will fall from floor to floor in several stages. Ten levels will serve as the primary blast floor and seven as the secondary blast floor. All columns in the primary blast floor will contain explosives. 40 per cent of the columns in the secondary floor will have explosives.

The company had earlier razed the 108-metre-high Bank of Lisbon in Johannesburg, South Africa in 2019.

According to officials, the distance between the structure and the adjoining building was around seven metres, while the space in Noida is around nine metres.

South Africa-based Jet Demolition is providing expertise on detonation for safe detonation and will have a test detonation before the actual detonation.

“Between 2,500 kg and 4,000 kg of explosives will be required. A test blast is planned in the last week of March or the first week of April to adapt the use of explosives to safety measures,” Mehta said.

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

The exclusion zone includes the entire Emerald Court, parts of the nearby ATS Greens Village and Parsvnath Prestige, a park and the road in front of the towers as well as a part of the Noida Expressway.

Traffic on the expressway will be halted for an hour, even as security personnel, including police, will be deployed in the area.