> A bridge is a largely static unmoving object, but even bridges require maintenance - some bridges require more maintenance frequent maintenance than others. It's not that bridges are necessarily of low quality.
That's a laymans impression of what a bridge is. In reality bridges are in an extremely dynamic environment with loads changing magnitude and direction constantly, unpredictably. The fact that you think that a bridge is 'a largely static unmoving object' is a tribute to the engineers that designed it and the contractors that built it, it's whole function can be described as 'appear not to move'.
But if you looked at the bridge in a little bit more detail and you would see how the bridge copes with the load your estimate would change to 'a bridge is an extremely versatile structure that dynamically responds to a wide variety of loads by rejecting those loads onto the foundation and soil around it'.
Ok yes well. Mostly they can still be describe as largely static relatively, because thats the whole point of building them. Something stable to move across
That's a laymans impression of what a bridge is. In reality bridges are in an extremely dynamic environment with loads changing magnitude and direction constantly, unpredictably. The fact that you think that a bridge is 'a largely static unmoving object' is a tribute to the engineers that designed it and the contractors that built it, it's whole function can be described as 'appear not to move'.
But if you looked at the bridge in a little bit more detail and you would see how the bridge copes with the load your estimate would change to 'a bridge is an extremely versatile structure that dynamically responds to a wide variety of loads by rejecting those loads onto the foundation and soil around it'.