America Champlain Tower South Apartment Building has previously been stretched with a Penthouse, causing the building height to exceed the regulations.

The Wall Street Journal on June 28 cited the construction materials of the Champlain Towers South, showing that in 1981, the building was originally designed 12 floors, but the contractor then asked local officials to build one more

This made Champlain Towers South violates regulations on legal height of local buildings at that time.

It is unclear if this move is one of the causes of Champlain Towers South collapsed on June 24 or not.

The rescue team at the scene of the 12-storey collapsed Champlain Towers South in Surfside, Florida, on June 27.

Tom Henz, Miami's veteran engineer, said at the time of Champlain Towers South was built, contractors often solve the limits on height and rarely ask about the opinions of the engineers

However, the engineer who participated in the Champlain Towers South, Manuel Jurado construction project, confirmed that there was no errors in the design or if any, the incident had occurred earlier, within 1-2 years.

Contractors often prefer the penthouses of buildings near the beach because they are significantly high.

As of June 28 (June 29, Hanoi, 11 bodies were taken out of the rubble at the scene of the collapsed Champlain Tower South in the town of Sufside, while 150 people were still unknown

It is still unknown that the causes of a partial collapse of apartment building has been fighting harmony in decades.

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