I don't know whether studying engineering has made me more or less anxious about high load-bearing structures. On the one hand, I know just how much work goes into making sure the structure is capable of withstanding regular loading conditions. On the other hand, I am aware of just how many things could possibly go wrong.,(reply>), ​@dgthe3 And then there's trying to accomodate unknown unknowns - a type of bolt that's prone to galvanic corrosion, a concrete mix that's succeptable to vibration, a surface that's prone to harmonic resonance.... Ideally, you want to protect against a single <b>type</b> of failue at multiple points causing catostrophic failure.,(reply>), Which is why safety factors are a thing. 'lets see, the load is this, with however many support points, and so the minimum strength required is whatever. Now multiply by a nice round number to cover for whatever you didn't think of in your calculations'