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Why Are I Beams Shaped Like An I (draft) (Patreon)

Published:
2016-12-04 12:33:07
Imported:
2026-06
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Content

Hello everyone!

Here is the early draft for the next video, which is quite short. I feel like I could go into more technical detail on the explaination and clarify some things, but trying to keep this one simple and short. I'm interested in your opinion.

Going to be releasing it at 2 pm GMT on the 8th, which is when I am pitching to the judges for the Irish Young Entrepreneur of the Year awards. Gonnan hit publish as I start my pitch and have my live analytics and the video playing in the background as I speak, just to add a little to the showmanship. 

Already working on the next video, which is about the history of iron/steel production. 

As usual, please do not share this link anywhere online. 

Files

Previews only

I beam draft

Uploaded by Brian McManus on 2016-12-04.

Comments

jason black

Also: I was expecting a comparison of bending resistance of the same shapes in different directions. E.g. applying force to the center of the face of a 1x12 wooden board will get you much more deflection than applying that same force orthogonally, at the center of the edge of the board, because the material offers much less thickness in the direction of the force. An I-beam offers components that are "thick" in both the horizontal and vertical directions, while as you say minimizing material, and therefore resists deflection very well.

Gabriel J.

I think you should at least add a schematic showing how one side is under compressive load and the other under tensile load. Otherwise, we don't really understand why material the furthest from the neutral axis is the most important : the lever analogy is nice, but feels like just an analogy, not an actual explanation.