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Duration:03:52
Uploaded:2017-12-05
Last sync:2017-12-05 17:10
Pipes can freeze in the winter, but you never hear about fire hydrants freezing. What makes them safe from the cold temperatures in winter time?

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Sources:

http://www.todayifoundout.com/index.php/2014/08/reason-fire-hydrants-dont-freeze-winter/
http://media.cygnus.com/files/base/FHC/document/2011/09/weeklydrills34final_10461393.pdf
http://media.cygnus.com/files/base/FHC/document/2011/11/weeklydrills43final0_10457995.pdf
https://www.livescience.com/43408-why-do-freezing-pipes-burst.html
https://www.plumbingsupply.com/residential-water-pressure-explained.html
http://www.firehydrant.org/info/faqs_ask7.html
https://books.google.com/books?id=GUXyAAAAQBAJ&pg=PA495

Images:

https://en.wikipedia.org/wiki/File:Downtown_Charlottesville_fire_hydrant.jpg
https://en.wikipedia.org/wiki/File:Dry_hydrant.jpg
https://commons.wikimedia.org/wiki/File:Hydrant_Insel_Krk_Kroatien.jpg
https://commons.wikimedia.org/wiki/File:Hydrant_in_Jerusalem.jpg
https://commons.wikimedia.org/wiki/File:Berlin_hydrant_20050211_p1000517.jpg
https://en.wikipedia.org/wiki/File:1869BirdsillHollyHydrantSideTop.jpg
https://commons.wikimedia.org/wiki/File:Fire_hydrant_UK.jpg
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