[ecis2016.org] This is the first instance when an under-construction building, nestled amid a large number of residential establishments was demolished.
A year after the Supreme Court (SC) ordered the illegally built structures be raze to the ground, the controversial twin towers built by real estate company Supertech in Noida’s Sector 93A were demolished at 2:30 pm on August 28, 2022. This is the first instance when an under-construction building, nestled amid a large number of residential establishments was demolished. The twin towers are also the tallest structures to be demolished in India.
Located within the Supertech Emerald Court housing society, the nearly 100-metre-high twin towers were brought to the ground in a matter of 9 seconds, using the ‘waterfall implosion’ technique.
What is waterfall implosion?
The waterfall implosion technique puts in place a highly intricate mechanism, in which explosives are placed at key locations in a building, and are detonated at specific intervals in order to ensure the structure collapses inwards and onto itself. The technique also assures minimum physical damage to the surroundings while carrying out the explosion in a matter of seconds. The timesaver technique has been well received due to its cost effectiveness and greater assurity of safety to the surroundings.
The cost of the demolition is estimated to be Rs 20 crore, which was paid by Supertech, as directed by the SC in its verdict.
While a detailed safety audit would monitor if the demolition caused any damages, all the nearby buildings seemed to be safe after the explosion, in which 3,700 kg of explosives (basically a mix of dynamite, emulsions and plastic explosives) were used.
The twin towers, named Apex (32 floors) and Ceyane (29 floors) were being developed since 2009, and would now leave 55,000 tonnes to 80,000 tonnes of debris to be handled post the demolition.
On August 31, 2021, the SC had ordered the twin towers, located off the expressway that connects the twin cities of Noida and Greater Noida, be razed in a matter of two months, as they were built in violation of the rules. The top court also specified that Supertech would bear the cost of the demolition of the twin towers. The top court said that the April-2014 verdict of the Allahabad High Court, which directed demolition of twin towers, did not deserve any interference.
“All flat owners in the twin towers in Noida to be reimbursed, along with 12% interest and the residents welfare association be paid Rs 2 crores for the harassment caused due to the construction of the twin towers,” the Supreme Court further said.
The Noida Authority had approved the building plans of the two towers in 2009, “strictly in accordance with the then prevailing building bye-laws,” Supertech CMD RK Arora had said in his plea to the top court, and has allotted 48,263 sqmt of land for their development.
“No deviation from the building plan was made and the building was constructed after making full payment to the authority. However, the Hon’ble Supreme Court has not found the construction satisfactory on technical grounds and accordingly issued orders to demolish the two towers,” Arora said in a public statement after the August 2021 verdict.
Supertech Twin towers: Factcheck
|Name of towers: Apex & Ceyane
Name of the housing project: Emerald Court
Location: Plot 4, Noida Sector 93A
Areas: 48,263 sqmt
Approved by: Noida Authority
Demolished by the order of: Supreme Court (initial order passed by Allahabad High Court in 2014)
Explosives used: 3,700 kg
Time taken in demolition: 9 seconds
Technology used for demolition: Waterfall implosion technique
Cost of demolition: Rs 20 crore
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