Watch seven massive pumps pour concrete down to the bottom of Salesforce Tower for 18 hours
Salesforce's new headquarters, Salesforce Tower, will be the tallest office building west of the Mississippi River when it opens in 2017.
A building of that scale requires lots of rebar and wires to support it, but at the bottom of it sits a huge concrete slab that keeps it from swinging, or worse, collapsing.
In fact, according to Wired, the concrete foundation is so big - 14 feet thick - that it took 18 hours of work from 1,300 trucks delivering 12,000 cubic yards of concrete to the site. The concrete was poured to the bottom of the construction site, where the slab was being built, through booms that were 150 feet to 190 feet long, it said.
Salesforce is reportedly spending $1.1 billion to build the 1.4 million square foot, 61-story building. Salesforce has more than 4,000 of its 13,000 total employees in the San Francisco area, making it the largest employer of the city.
In case you're wondering what the 18-hour construction looked like, here's a video of the whole process:
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