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The Problems with China's Space Program 17 دقيقة A few of the things I love about runways 🌌Get Nebula using my link for 50% off an annual subscription: https://go.nebula.tv/Practical-Engineering 🚆Watch The Logistics of X: https://nebula.tv/thelogisticsofx?ref=practical-engineering Errata: 3:47 Wind sock is in the wrong direction! 9:05 The graphic and voiceover could have explained this more clearly. Tire width goes into estimating pass-to-coverage ratio in pavement design to estimate load repetitions. For rigid pavements, it's measured at the surface. For flexible pavements, it's measured at the top of the subgrade. For rigid pavement, the fatigue concern is maximum tensile stress at the bottom of the PCC slab. That bottom stress is governed mainly by slab bending mechanics and load position. A small lateral shift can change the critical bottom stress a lot, so the “near-maximum response” region doesn’t expand the same way it does with a flexible pavement. Some of the construction techniques and engineering requirements for runways that you don’t really notice when you’re a passenger looking through the window Watch this video ad-free on Nebula: https://nebula.tv/videos/practical-engineering-the-hidden-engineering-of-runways Signed copies of my book (plus other cool stuff) are available here: https://store.practical.engineering/ Practical Engineering is a YouTube channel about infrastructure and the human-made world around us. It is hosted, written, and produced by Grady Hillhouse. We have new videos posted regularly, so please subscribe for updates. If you enjoyed the video, hit that ‘like’ button, give us a comment, or watch another of our videos! CONNECT WITH ME ____________________________________ Website: http://practical.engineering Twitter: https://twitter.com/HillhouseGrady Instagram: https://www.instagram.com/practicalengineering Reddit: https://www.reddit.com/r/PracticalEngineering Facebook: https://www.facebook.com/PracticalEngineerGrady Patreon: http://patreon.com/PracticalEngineering SPONSORSHIP INQUIRIES ____________________________________ Please email my agent at practicalengineering@standard.tv DISCLAIMER ____________________________________ This is not engineering advice. Everything here is for informational and entertainment purposes only. Contact an engineer licensed to practice in your area if you need professional advice or services. All non-licensed clips used for fair use commentary, criticism, and educational purposes. SPECIAL THANKS ____________________________________ This video is sponsored by Nebula. Stock video and imagery provided by Getty Images, Shutterstock, Pond5, and Videoblocks. Some footage provided by Runway Safe Special thanks to Tom Tallerico Video by Grady Hillhouse Edited by Wesley Crump Produced by Ralph Crewe Graphics by Nebula Studios MUSIC CREDITS ____________________________________ The Early Bird from Epidemic Sound Building Blocks from Epidemic Sound Midnight in Paris composed by Caleb Winters (https://beacons.ai/calebwinters) Woodland Expedition composed by Caleb Winters (https://beacons.ai/calebwinters) Tonic and Energy by Elexive is licensed under a Creative Commons Attribution License Source: https://www.youtube.com/watch?v=U6fBPdu8w9U
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