Why Are I-Beams Shaped Like An I?

Get your free one month trial with The Great Courses Plus: http://ow.ly/oBHf303M6rB Thank you to my patreon supporters: Adam Flohr, darth patron, Zoltan Gramantik, Josh Levent, Henning Basma, Karl Andersson, Mark Govea Patreon: https://www.patreon.com/user?u=2825050&ty=h Facebook: http://facebook.com/realengineering1 Instagram: https://www.instagram.com/brianjamesmcmanus Twitter: https://twitter.com/Fiosracht Music: “The Catch” by Maeson: Check his music out: https://soundcloud.com/maeson-1/tracks https://twitter.com/Maesonprod