2007-02-22 05:33:16 · 5 answers · asked by wilburrr 2 in Science & Mathematics ➔ Engineering
It's a more supporting design, where multiple points on the bridge have to fail before the bridge would come down.
2007-02-22 05:35:50 · answer #1 · answered by Anonymous · 0⤊ 0⤋
A truss is very efficient at supporting and distributing a load in many directions. It has a high strength to weight and volume ratio. Because the load is distributed over many points, the truss can break at several points before the entire support fails. Look at nature. Truss like frameworks are used everywhere.
A truss is usually an open framework, so in a bridge, wind can pass through freely preventing horizontal force from stress the bridge unnecessarily.
2007-02-22 15:17:15 · answer #2 · answered by Anonymous · 0⤊ 0⤋
In a word: Weight.
Structures are designed to support "live" loads and "dead" loads. The structure itself is "dead" load, so the lighter the "dead" load, the more "live" load it will support.
2007-02-22 20:20:40 · answer #3 · answered by Pro bono publico 4 · 0⤊ 0⤋
well its all about the volume if want to make solid imagine the weight of it so the open areas are important
2007-02-22 13:44:34 · answer #4 · answered by koki83 4 · 0⤊ 0⤋
TRUSSES ARE MORE EFFICIENT USE OF MATERIALS. YOU CAN GET A LARGE DEPTH WITHOUT A LOT OF MATERIAL.
2007-02-22 14:09:54 · answer #5 · answered by Anonymous · 0⤊ 0⤋