Hoover Dam Needed 125 Years to Cool. They Had 2 Years.

Bureau of Reclamation engineers calculated that Hoover Dam's concrete, poured as one mass, would take 125 years to cool. The builders had about two. This is how they did it. From the original 1930 design plans to the 1995 core tests: 215 interlocking columns, 582 miles of one-inch cooling pipe, an eight-foot slot left open through the dam, Milton Garland's two-stage refrigeration plant, and the grout that turned a stack of blocks into a single arch. Plus the detail most visitors miss inside the inspection galleries. Chapters: 0:00 The Cooling Paradox 1:01 Built in Pieces 1:46 Splitting Into Columns 2:26 The Owyhee Experiment 3:24 The Pipe Network 4:40 The Refrigeration Plant 5:41 Sealing the Gaps 6:45 Cooling Complete 7:59 Still Curing Today 8:50 Questions in the Walls Sources: https://www.usbr.gov/lc/hooverdam/History/... https://www.usbr.gov/lc/hooverdam/faqs/dam... https://catalog.archives.gov/id/293867 https://ascelibrary.org/doi/abs/10.1061/41... https://www.asce.org/project/john-l-savage https://ethw.org/Milton_Garland https://www.ashrae.org/about/ashrae-honors... https://lasvegassun.com/news/2000/aug/01/i... https://www.latimes.com/archives/la-xpm-20... https://lasvegassun.com/news/2008/may/15/d... https://www.achrnews.com/articles/84449-ho... https://www.mysticstamp.com/info/this-day-... https://douglasvanbossuyt.com/2009/09/28/t... https://jacobbarlow.com/2024/10/17/hoover-... https://en.wikipedia.org/wiki/Hoover_Dam Some visuals and the narration voice in this video may be AI-generated or digitally altered. Reconstructions are identified as such in the narration. Image & video credits: Additional footage: Internet Archive (public domain), Pexels, Pixabay. Music: "Prélude" by Ehma is licensed under CC BY 3.0. To view a copy of this license, visit https://creativecommons.org/licenses/by/3.0/. Note: some visuals and the narration may be AI-generated or digitally altered.