Yes, because the mathematical process they used in that architecture was really well done.
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Not inherently so, it isn't. The design mathematics are fully understood for any bridge type, and the individual bridge is designed for its own location and intended loads (plus safety factor).
because of the support of the circles
No
An arch bridge. I think that may have been discovered quite some time ago !!! +++ It was - the Romans used arches extensively, in buildings as a well as for bridges. However, the arch is indeed stronger than the plank, or simple beam, bridge because it transmits the loads to its abutments. You can stiffen a beam bridge by fitting it with vertical side-members, or in larger structures, frames (trusses).
Suspension bridges are typically stronger than truss bridges because they can span longer distances and support heavier loads. The design of a suspension bridge allows for the weight to be distributed more evenly, reducing stress on the structure. Truss bridges are better suited for shorter spans and are generally lighter in weight.
Yes there were truss bridges in Europe before the United States. Truss bridges formed in the US because of Europeans, but new American designs were made and that is why the truss bridge is more abundant in the US than Europe today.
As strong as you make it... Basically a truss system is used when a beam cannot hold its load, so is one way of 'reinforcing' a beam (you could have more supporting colums or use cable stayed/suspension techniques). Its basically stronger than a beam, and 'weaker' than a suspension bridge, but to be honest it's basically as strong as you engineer it. Try searching truss bridge on wikipedia... there's lots of different types and I'm sure it'l have the info.
because it is less stronger than the sides of the bridge.
Because it has more support in its arches.
the truss bridge is strong because each side supports the next one over, as that one supports the next one over, as that one supports the first one. I'm not sure on this part, but I think it is a lot more stable than a square because it also has the strength of the arch.
A metal based tooth for a bridge is definitely stronger than just porcelain, but depending where the bridge is in the mouth, it may not be as aesthetically pleasing as just porcelain would be.
Well, honey, let me tell you - the Pratt truss bridge may be strong and reliable, but it ain't perfect. One disadvantage is that it requires more materials than some other bridge designs, which can drive up costs. Plus, those diagonal members can be a pain to maintain and inspect. But hey, no bridge is flawless, am I right?
nipples