Comment on In a First, America Dropped 30,000-Pound Bunker-Busters—But Iran’s Concrete May Be Unbreakable, Scientists Say

muntedcrocodile@hilariouschaos.com ⁨4⁩ ⁨days⁩ ago

• slaneesh_is_right@lemmy.org ⁨3⁩ ⁨days⁩ ago

  We dropped a big boom worth 120000 hamburgers and the explosion was many football fields big. Salute to the brave troops.

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• PolydoreSmith@lemmy.world ⁨4⁩ ⁨days⁩ ago

  Your post is informative but now all I can hear in my head is Green Day’s “American Idiot”.

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• hobovision@lemm.ee ⁨4⁩ ⁨days⁩ ago

  Sorry bud, you’re straight up wrong. Aerospace and defense in the US very much still uses the inch-pound-second system of units.

  I’m not a concrete guy, but I know that metals and composites have material properties certified for use in civil and commercial aviation are given in psi in MMPDS and CMH-17. I would be willing to bet that concrete specifications in the US are no different.

  I could keep going. Our bolts are specified in ultimate tensile strength by psi. Structural steel standards use minimum yield strengths in psi. There is literally a type of steel called A36 because its minimum required yield strength is 36,000 psi.

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  • Hawk@lemmynsfw.com ⁨3⁩ ⁨days⁩ ago

    Yeah psi is a pretty common unit and trivial to swap between if SI is needed.

    Arguments like above often show a lack of real world experience.

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• crapwittyname@lemm.ee ⁨4⁩ ⁨days⁩ ago

  I prefer my mechanical stress calculations in dynes per square parsec thank you very much.

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