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More than 200 trucks poured nearly 82 million pounds of concrete over an 18-hour period.
Now that's solid.
A crew of construction workers in Los Angeles laying the foundation for the tallest building west of the Mississippi River broke the record for the world's largest continuous concrete pour, according to Guinness World Records.
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Dubbed the "grand pour," the feat began around 4 p.m. Saturday in downtown LA.
More than 18 hours later, 208 trucks laid down more than 21,200 cubic yards of concrete weighing about 84 million pounds, Sean Russell, a spokesman for the skyscraper project, told the Los Angeles Times.
The previous record of 21,000 cubic yards was set by The Venetian hotel in Las Vegas in 1999.
Eight concrete plants and a backup were used to fill the huge order.
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Each truck made 10 to 14 "drops," traveling from various locations through the night no further than 20 miles away to ensure the concrete didn't get too hard.
Once finished, the New Wilshire Grand skyscraper will soar 1,100 feet and boast a 900-room hotel, offices, convention space and even a swimming pool on the 73rd floor.
Watch this amazing time-lapse video of the pour: