It Took 18 Hours to Pour San Francisco’s Biggest-Ever Concrete Foundation
[{"id": "cwz3erl", "text": "Holy shit. an acre pad 14 feet deep?  \nThat's 610,000 cubic feet of concrete.  \nThat's 22,600 yards of concrete.  \nThat's 2,500 truck loads of concrete.  \nThat's 139 trucks per hour.  \nWhich is a little more than 2 concrete trucks per minute for 18 hours.  \n\nHoly hell, that is ridiculous. ", "replies": [], "depth": 1}]