2006-07-23 08:12:56 · 4 answers · asked by fabmaster6 3 in Science & Mathematics ➔ Engineering
Let me say that I am not asking WHY bridges were built, but HOW they are built! What sustains the hovering part over the bridge without any support underneath?
2006-07-23 08:19:26 · update #1
Many different kinds of long span bridges (steel girders, concrete beams, suspension, cable stayed, arches, etc.). Check out http://pghbridges.com/basics.htm for some basic information.
Support during construction can be by cantilevers, cables from above, scaffolding from below, and more.
2006-07-25 09:20:04 · answer #1 · answered by Zach 5 · 0⤊ 0⤋
Very Carefully.
2006-07-23 08:17:34 · answer #2 · answered by Scotty 6 · 0⤊ 0⤋
Because not everyone can afford a plane. What kind of question is this, honestly. Would you rather jump them?
2006-07-23 08:15:43 · answer #3 · answered by Tweendasheetz 3 · 0⤊ 0⤋
it is what is taught in civil engg.
2006-07-23 08:15:33 · answer #4 · answered by victor 1 · 0⤊ 0⤋