{"id":86157,"date":"2024-03-11T02:00:31","date_gmt":"2024-03-11T06:00:31","guid":{"rendered":"https:\/\/quotulatiousness.ca\/blog\/?p=86157"},"modified":"2023-12-06T17:14:13","modified_gmt":"2023-12-06T22:14:13","slug":"why-railroads-dont-need-expansion-joints","status":"publish","type":"post","link":"https:\/\/quotulatiousness.ca\/blog\/2024\/03\/11\/why-railroads-dont-need-expansion-joints\/","title":{"rendered":"Why Railroads Don&#8217;t Need Expansion Joints"},"content":{"rendered":"<p align=\"center\"><iframe loading=\"lazy\" width=\"854\" height=\"480\" src=\"https:\/\/www.youtube.com\/embed\/zqmOSMAtadc?si=J_lvmg95fjx4ofUG\" title=\"YouTube video player\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" allowfullscreen><\/iframe><\/p>\n<blockquote><p><strong>Practical Engineering<\/strong><br \/>\nPublished Dec 5, 2023<\/p>\n<p>A friendly overview of thermal effects on railways.<\/p>\n<p>Errata: At 9:00, the left column of calculations is incorrectly labeled &#8220;SI.&#8221; It should be imperial. Whoops!<\/p>\n<p>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.<br \/>\n<!--more--><\/p>\n<p>Signed copies of my book (plus other cool stuff) are available here: <a href=\"https:\/\/store.practical.engineering\/\" rel=\"noopener\" target=\"_blank\">https:\/\/store.practical.engineering\/<\/a><\/p>\n<p>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 \u2018like\u2019 button, give us a comment, or watch another of our videos!<\/p>\n<p>CONNECT WITH ME<br \/>\n____________________________________<br \/>\nWebsite:         <a href=\"http:\/\/practical.engineering\" rel=\"noopener\" target=\"_blank\">http:\/\/practical.engineering<\/a><\/p>\n<p>SPONSORSHIP INQUIRIES<br \/>\n____________________________________<br \/>\nPlease email my agent at practicalengineering@standard.tv<\/p>\n<p>DISCLAIMER<br \/>\n____________________________________<br \/>\nThis 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.<\/p>\n<p>SPECIAL THANKS<br \/>\n____________________________________<br \/>\nThis video is sponsored by Brilliant.<br \/>\nStock video and imagery provided by Getty Images, Shutterstock, and Videoblocks.<br \/>\nMusic by Epidemic Sound: <a href=\"http:\/\/epidemicsound.com\/creator\" rel=\"noopener\" target=\"_blank\">http:\/\/epidemicsound.com\/creator<\/a><br \/>\nTonic and Energy by Elexive is licensed under a Creative Commons Attribution License<\/p>\n<p>Video by Grady Hillhouse<br \/>\nEdited by Wesley Crump<br \/>\nProduced by Ralph Crewe<br \/>\nGraphics by Nebula Studios<\/p><\/blockquote>\n","protected":false},"excerpt":{"rendered":"<p>Practical Engineering Published Dec 5, 2023 A friendly overview of thermal effects on railways. Errata: At 9:00, the left column of calculations is incorrectly labeled &#8220;SI.&#8221; 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 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":35193,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[237],"tags":[590],"class_list":["post-86157","post","type-post","status-publish","format-standard","hentry","category-railways","tag-engineering"],"jetpack_featured_media_url":"https:\/\/quotulatiousness.ca\/blog\/wp-content\/uploads\/2016\/06\/favicon.png","jetpack_shortlink":"https:\/\/wp.me\/p2hpV6-mpD","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/quotulatiousness.ca\/blog\/wp-json\/wp\/v2\/posts\/86157","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/quotulatiousness.ca\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/quotulatiousness.ca\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/quotulatiousness.ca\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/quotulatiousness.ca\/blog\/wp-json\/wp\/v2\/comments?post=86157"}],"version-history":[{"count":1,"href":"https:\/\/quotulatiousness.ca\/blog\/wp-json\/wp\/v2\/posts\/86157\/revisions"}],"predecessor-version":[{"id":86158,"href":"https:\/\/quotulatiousness.ca\/blog\/wp-json\/wp\/v2\/posts\/86157\/revisions\/86158"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/quotulatiousness.ca\/blog\/wp-json\/wp\/v2\/media\/35193"}],"wp:attachment":[{"href":"https:\/\/quotulatiousness.ca\/blog\/wp-json\/wp\/v2\/media?parent=86157"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/quotulatiousness.ca\/blog\/wp-json\/wp\/v2\/categories?post=86157"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/quotulatiousness.ca\/blog\/wp-json\/wp\/v2\/tags?post=86157"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}