A Midtown high-rise that suffered structural damage was stable for now, New York City’s buildings commissioner said, but he warned of tense days ahead.

Crews say they've stabilized a Midtown high-rise after several upper-floor columns buckled, showing signs of potential collapse.

The United Nations launched an urgent appeal Wednesday for nearly $300 million towards Venezuela earthquake relief operations as the death toll from the disaster rose to more than 3,800 people.Officials were appealing for $296 million to provide urgently needed aid for 1.3 million people over six months, he said.

But the high-profile nature of the development itself, as the largest ongoing office-to-residential conversion in the U.S. with the addition of 11 new stories, takes the implications beyond just liability and insurance.

Images and videos of the Manhattan building analyzed by The Times show that the structural columns buckled directly beneath where the recent addition was built.

Work began Tuesday night to shore up the failed columns on the project converting a commercial office building to apartments, said the city’s Department of Buildings commissioner.

Several buildings in Midtown Manhattan were evacuated Tuesday morning after officials discovered buckling support beams in a former office building that is being converted to residences.

Emergency evacuations took place at the former Pfizer building in Manhattan.

The Midtown high-rise that dangerously buckled Tuesday will need to be partially demolished — although stabilizing it to even attempt the risky move could prove extremely harrowing, experts told The Post.