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Yeah, there was a ton of sarcasm in that statement. I would love to design them, just wouldn't want to carry that responsibility lol
Its easier than you think, especially with today's computers. We do most work by hand, and are then introduced to the computer programs after we understand the hand calcs..... Plus think about it this way... engineers could just kinda guesstimate and still get away with it.... Using a Factor of Safety makes things upwards of 2.5-5 times stronger than they need to be for that just in case... We put 3200 pounds in a 2400 pound capacity elevator *(as stupid college kids do)* and it was fine.....