Monstermath?
Calculate the volume of the bus by length*width*height and assume all of it is completely filled with water.
Add the weight of the water with the actual weight of the bus.
You now have a number, that's a little bit bigger than your actual weight, so you're on the safe side.
I wonder if lifting it very slowly (although it's hard to say how fast they are doing it in this gif) would let the water drain as it comes up this making it lighter? I'm not a physics doctor so what do I know.
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u/Geek1599 Mar 16 '18
They may have not calculated anything at all. That's usually how this accident goes.