2007-05-15 03:34:36 · 3 answers · asked by bombshellbeuaty 2 in Science & Mathematics ➔ Engineering
A cantilever bridge has a large support on one side and the full weight of the bridge is hung from that single support (like a shelf protruding from a wall).
A suspension bridge has two large supports that have cables that pass over them and are anchored to the ends of the area that is bridged. The weight of the decking is supported by down cables that hang off those large suspension cables.
2007-05-15 04:17:34 · answer #1 · answered by Rich Z 7 · 1⤊ 0⤋
I will amend the second answer in the part about cantilever. While a cantilever can look like a shelf, almost always in a bridge it is built as a balanced structure with all the weight on a pier and arms going out to both sides. And on bridges, most often there are two or more piers with cantilever units on each pier that reach out and touch each other over the middle of the panel.
The Forth Bridge http://www.chaosscience.org.uk/dem/public_html/images/articles/20031031190425332_4.jpg
has short truss sections connecting the ends of the cantilevers while the Highway 43 bridge
http://www.southeastroads.com/alabama020/us-043_072_tn_river_br_01.jpg
brings them together.
2007-05-15 05:16:39 · answer #2 · answered by Mike1942f 7 · 0⤊ 0⤋
bad girl ............do ur homework yourself...............
2007-05-15 03:41:19 · answer #3 · answered by confused.. 2 · 0⤊ 1⤋