Material List:
- Two 8 inch long 2x2 pieces of wood that will be used to connect opposite towers and support the deck. - Four 7 1/2 inch long 2x2 pieces of wood that will be used for the end side guards for the deck.
Something commonly seen in most modern suspension bridges is the use of trusses underneath the deck of the bridge. Trusses are are triangle structure used in order to strengthen a bridge.Triangles are the strongest shape and this is why they are used to help hold up a bridges weight. Trusses help a bridge by dissipating the compression and tension forces which allow for bridges to be more rigid. In suspension bridges trusses are found to be lined up under the deck for that extra support. Since the deck is constantly being tensed by the suspender cables.
Amazing Video Explaining the History of Suspension Bridges and How They Have Evolved Over Time12/12/2014
External Forces:
Two kinds of external forces operate on any bridge; the static (dead) load, and the dynamic (live) load.
Internal Forces: There are four main types of internal forces acting upon suspension bridges; tension, compression, torsion and shear.
A suspension bridge is a bridge which is built by suspending the roadway from cables that are attached to a master cable. Suspensions bridges are known as some of the strongest and largest bridges in the world. The larges suspension bridge is located in Awaji Island, Japan and spans up to 1991 metres (6532 ft). Suspension bridges have interested engineers since the mid-1800s and have truly shown their potential in the 21st century. Some commonly known suspension bridges include; the Golden Gate Bridge (San Francisco, CA), Brooklyn Bridge (New York, NY), and Lynn Canyon Suspension Bride (Vancouver, BC). Suspension bridges are able to withstand a lot of weight while being able to still cover gigantic distances and this is why it is considered an amazing bridge.
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