By Wade Sellers For Daily Mail Australia
Published: 06:36 GMT, 22 February 2019 | Updated: 06:36 GMT, 22 February 2019
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The support beams holding the 36-floor Opal Tower 'burst' because they weren't designed properly and were supported by under-strength concrete, an independent report has found.
The troubled residential tower, in Sydney's Olympic Park, was evacuated when cracks were discovered on the 10th floor on Christmas Eve. And two months later, 221 of the building's 392 units remain unoccupied because of fears for the building's safety.
A final report into problems with the tower, conducted by engineering professors Mark Hoffman, John Carter and Stephen Foster, has found there was 'significant damage' to ten of the 36 levels and the building's basement.
They also found there were 'deficiencies' in the building materials.
The final report from the Sydney's disastrous Opal Tower in Olympic Park (pictured) has been released, detailing what exactly what was wrong with the building and what made it crack - sending scared residents fleeing their apartments on Christmas Eve