The inspectors have issued an infraction to the address of a building that collapses after a large crack formed in a 36th floor window.
The high-rise condominium – nicknamed by locals as the Inclined Tower of San Francisco – is the tallest residential building in the city.
KNTV of San Jose reported Tuesday that residents of the Millennium Tower heard crisp noises, and then heard a pop around 2:30 a.m. Saturday.
One owner found the crack in a window of his unit at the corner of the 58-story building.
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City inspectors have issued an infraction to the management of the Millennium Tower after a large crack formed in a window of the 36th floor of the building
Part of the sidewalk next to the building has been blocked as a precaution while the inspectors access the potential danger of the broken window
The municipal authorities have blocked part of the sidewalk of Mission Street as a precaution and ordered the administration to report on the extent of the problem on Friday and the soundness of the facade of the building.
An inspector was sent to the building as soon as the problem was known, but he could not enter the unit because the resident was not there, according to William Strawn of the SF Building Inspection Department.
San Francisco City Supervisor Aaron Peskin told NBC: "When you have a window on the 36th floor that breaks in the middle of the night, it's a big wake-up call."
He also added that the broken window was supposed to withstand hurricane force winds.
"If a window completely failed, it would rain glass fragments hundreds of meters down on one of the most crowded and congested areas of the city," Peskin told the San Francisco Chronicle.
The center tower has settled about 16 inches (51 centimeters) in the landfill and is tilting.
The address of the building was instructed to report on Friday on the magnitude of the problem and the strength of the facade of the building (file photo)
Residents have filed multiple lawsuits against developers and the city since structural problems began after the completion of construction in 2009.
The owner of Millennium Towers and president of the Association of Home Owners, Steven Mayer, told Fox2 KTVU: "We immediately reviewed the unit personally and agreed that our experts enter.
"What our preliminary structural engineer has to say, as well as our administration or our windows expert, is that this is an isolated problem at this time
"But we continue to address the problem and we will have a more definitive answer in the next 24 to 72 hours from our expert."
In January, building inspectors in the city of San Francisco issued a citation against the 58-story leaning tower for an apparent fire safety risk.
KNTV of San José reported that the Building Inspection Department issued the violation notice against the Millennium Tower after the consultants discovered that the sloping building had spaces between the façade, the concrete and the steel core.
Experts say that smoke and flames can shoot through those gaps, making it easier for a fire to jump to a higher floor.
An October 2016 photo shows the tension meters placed along a wall with cracks from floor to ceiling in the parking lot of the Millennium Tower in San Francisco
The tower (the center of the image of the triangular building) has been tilted and sunk almost 17 inches since its completion in 2009
The fire safety hazard warning was part of a December 2016 report commissioned by the Millennium Home Owners Association after the owner of a condo complained of a mysterious odor.
Attorneys at the Millennium Homeowners Association (HOA) said in July 2017 that the foundation of the building should be rebuilt as soon as possible after it was discovered that the tower had sunk by almost 17 inches .
The luxurious building where the penthouses have sold for more than 13 million dollars, has an extensive indoor pool, a gym and spa, a home theater and a restaurant and wine bar run by the famous chef Michael Mina.