RIO DE JANEIRO, Jan 26 (Reuters) - Rescuers on Thursday recovered three bodies from the rubble of three buildings that collapsed in downtown Rio, highlighting the creaky infrastructure of the city that will host the 2014 soccer World Cup and the 2016 Olympics.
The buildings, one 20 floors high, collapsed on Wednesday night in a cloud of dust and smoke just one block away from the city's historic Municipal Theater.
Rescue teams pulled six people alive from the rubble, but at least 16 people were still missing, authorities said. The buildings were mostly used for office space during the day and were almost empty at the time of the disaster.
Rio de Janeiro Mayor Eduardo Paes said the cause of the collapse could have been a structural failure caused by work being done on one of the buildings. He said there was no gas leak that could have caused an explosion.
"The work on one of the buildings could have been the cause. They could have bungled it. That's one hypothesis but it is speculation," Paes told CBN radio broadcaster. "We will investigate this fully, because it is not normal for a building to collapse," he said.
Rio is struggling to address concerns about its decrepit infrastructure, unreliable power supplies and deficient public transportation as it prepares to host global sporting events.
Construction and renovation of 12 stadiums for the soccer World Cup in 2014 is behind schedule and there is concern that Brazil's overcrowded and inefficient airports will be not able to handle masses of sports fans expected to attend the events.
The building collapses come months after an explosion apparently caused by a gas leak ripped through a restaurant in downtown Rio, killing three people and igniting more concern about the state of the city's infrastructure.
In recent months, Rio's inhabitants have had to deal with exploding sewer lines and landslides in the city's slums caused by heavy rain and deforestation.
The collapsed buildings had a bakery and an Itau Unibanco Holding bank branch on the ground floor and were near the headquarters of state-run companies such as oil giant Petrobras and development bank BNDES.
Witnesses said they heard the structures cracking and saw plaster falling before the buildings collapsed, causing panic in the streets and covering parked cars with dust and debris.
"It was like an earthquake. First some pieces of the buildings started to fall down. People started to run. And then it all fell down at once," a witness who identified himself as Gilbert told Reuters.
One man said he was on the 10th floor and ran down the stairs just in time to escape the collapse. BD+C
Related Stories
Architects | Mar 10, 2015
German architect Frei Otto named 2015 Pritzker Architecture Prize laureate
The news comes a day after the visionary architect, 89, died in his native Germany.
Modular Building | Mar 10, 2015
Must see: 57-story modular skyscraper was completed in 19 days
After erecting the mega prefab tower in Changsha, China, modular builder BSB stated, “three floors in a day is China’s new normal.”
Sponsored | Metals | Mar 10, 2015
Metal Building Systems: A Rising Star in the Market
A new report by the Metal Building Manufacturer's Association explains the entity's efforts in refining and extending metal building systems as a construction choice.
Retail Centers | Mar 10, 2015
Retrofit projects give dying malls new purpose
Approximately one-third of the country’s 1,200 enclosed malls are dead or dying. The good news is that a sizable portion of that building stock is being repurposed.
Retail Centers | Mar 10, 2015
Orlando's Skyscraper to be world's tallest roller coaster
The Skyscraper is expected to begin construction later this year, and open in 2016. It will stand at 570 feet.
Museums | Mar 9, 2015
Architecture based on astronomy principles for new planetarium in Shanghai
The ancient Chinese civilization left some of the earliest records of humans studying the stars and skies. To exhibit this long history, a new planetarium and astronomy museum is planned for construction in Shanghai.
Architects | Mar 9, 2015
Study explores why high ceilings are popular
High ceilings give us a sense of freedom, new research finds
Cultural Facilities | Mar 9, 2015
London council nixes plans to rebuild the Crystal Palace
Plans for the new Crystal Palace Park were scrapped when the city and the project's developer could come to an agreement before the 16-month exclusivity contract expired.
Office Buildings | Mar 7, 2015
Chance encounters in workplace design: The winning ticket to the innovation lottery?
The logic behind the push to cultivate chance encounters supposes that innovation is akin to a lottery. But do chance encounters reliably and consistently yield anything of substance?
Architects | Mar 6, 2015
Study suggests our brains prefer curvy architecture
A research team at the University of Toronto at Scarborough worked with several European designers to see what sort of spaces pleases our brains more. Their finding: People are far more likely to call a room beautiful when its design is round instead of linear.