Supertech's Twin Towers In Noida To Be Demolished Using 4000 Kg Explosives, In 9 Seconds
The twin towers in Noida which were declared illegal by the Supreme Court and ordered their demolition will be reduced into a huge pile of debris on May 22, 2022.
Edifice Engineering, a demolition agency has been given the task to bring down the colossal structures.
Of the two towers -- Apex, the taller one is 103 m and Cayene, the smaller one is 97 metres.
Utkarsh Mehta, partner at Edifice, said Ceyane (31 floors) will collapse to the ground first followed by Apex (32 floors).
¡°The building will fall inwards in multiple stages, floor by floor. Ten levels will act as primary blast floors and seven as secondary blast floors. The primary blast floors will have explosives in all columns. In the secondary floors, explosives will be in 40 per cent of the columns,¡± Mehta said, explaining the technical aspects of the process.
South Africa-based Jet Demolition is providing expertise on the blast for safe implosion and a trial blast would take place ahead of the actual implosion.
2,500 kg and 4,000kg explosives
"Explosives between 2,500 kg and 4,000kg will be required. A test blast has been planned in the last week of March or the first week of April to optimise the use of explosive vis-¨¤-vis safety measures,¡± Mehta said.
While the actual implosion would take only nine seconds for the towers to be razed, the ground work preparation is already underway.
This includes removal of structures like electrical fittings, plumbing items, doors and windows. Walls are also being demolished to reduce the amount of rubble the implosion would create.
He said the company is also preparing two to three layers of wired mesh around columns which would be filled with explosives and laying 'geo-textile fabric' on the ground to stop debris from flying off in an uncontrolled manner.
The implosion, he said, would induce a pull away from the premises of Emerald Court, the group housing society where 600 families live and on which the twin towers are located.
Residents in vicinity will be asked to move out
Residents from the exclusion zone (the blast radius) will be asked to move out at least three hours ahead of the implosion and they can return at least two hours after the action.
The exclusion zone includes entire Emerald Court, nearby ATS Greens Village and parts of Parsavnath Prestige, a park and the road in the front of the towers as well as a portion of the Noida Expressway.
Traffic on the expressway would be stopped for an hour, even as security personnel, including police, would be deployed in the area.
"We will need people to evacuate the entire area during the implosion. We have given a report in this regard to the Noida Authority, but a final evacuation zone will be decided in consultation with the police," Mehta said.
"At the time of the blast, only five persons ¨C two foreign experts, one police personnel, one blaster, and the Edifice project manager, will be present in the exclusion zone to execute the demolition," Mehta added.
While the buildings will be demolished in 9 seconds, the company said that the debris that will get accumulated might take at least three months to be removed.
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