Make it very understandable and scientific!!
2006-12-30 11:52:50 · 6 answers · asked by Angelina 1 in Science & Mathematics ➔ Engineering
in a bridge with say two pillars the posts that hold it up the weight of the bridge is held all by the two pillars alone. that can be a huge amount of weight.
a arch allows the weight to be shared by each of the points on the arch and carried to the ground . so instead of one brick standing on end acting as a pillar to hold up a bridge you have a great number of bricks standing on end holding up the bridge.
shared work load is easier then attempting to do all the work yourself.
2007-01-01 07:35:33 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Why is a well-designed bridge sturdier than a badly-designed one? There's a number of ways bridges can be built which are just as "sturdy" as a conventional arch bridge. Arch bridges work well because they effectively reroute vertical loads at the center towards foundations to either side, and when "the math is done", arcs of circles is one optimum geometry.
Old time arch bridges were massive structures built of stone, so they tended to stay put for a long time, maybe that's what you mean?
2006-12-30 12:26:53 · answer #2 · answered by Scythian1950 7 · 0⤊ 0⤋
You're on the right track but your terminology and grasp of
"kinds of Bridges" is a little out of whack - quote my answer
from hereon after adding some 'meat' to it by researching
"bridges" on the Internet.
Hey, you gotta do some of your homework
There are three basic types of bridges:
the Beam Bridge
the Truss Bridge
the Arch Bridge
with many variations and combinations.
The design of a specific bridge is what makes it strong/sturdier.
The most famous poorly designed bridge was "Galloping Gertie"
that spanned the Tacoma Narrows and was so poorly designed that it started "galloping - twisting" after only four months in use, and finally collapsed into the water beneath.
2006-12-30 13:41:30 · answer #3 · answered by joustwindmills 1 · 0⤊ 0⤋
Sturdines depends on the bridges design. not just because its arched shape it already is safe and sound. there are alot of factors that contribute to the strength of a bridge like its distance and all forces that act in it.
2006-12-30 12:06:56 · answer #4 · answered by 2cute4u 2 · 0⤊ 0⤋
Understandable and scientific, eh? In other words, you plan to hand in something written by someone here?
OK, here's a hint: why do some brassieres support you better than others?
2006-12-30 11:57:27 · answer #5 · answered by Anonymous · 0⤊ 0⤋
http://en.wikipedia.org/wiki/Arch_bridge
2006-12-30 13:05:36 · answer #6 · answered by Piguy 4 · 0⤊ 0⤋