Why Railroads Don't Need Expansion Joints

From the creator

A friendly overview of thermal effects on railways. 🚆 Watch the entire railway series here: https://youtube.com/playlist?list=PLTZM4MrZKfW-DUovVfoD_EfOwXTY1Zog5&si=Wc3am9N14wuNou16 Errata: At 9:00, the left column of calculations is incorrectly labeled "SI." It should be imperial. Whoops! Just as all materials have a mostly linear relationship between temperature change and length change, all materials also have a similar relationship between stress and change in length (often called strain). And this is part of the secret to continuous welded rail: restrained thermal expansion. You can overcome one with the other. Watch this video ad-free on Nebula: https://nebula.tv/videos/practical-engineering-why-railroads-dont-need-expansion-joints 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.facebo

Published 2023-12-05 · Watch on YouTube ↗
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