lippy
DESCRIPTION
TRANSCRIPT
![Page 1: Lippy](https://reader033.vdocuments.site/reader033/viewer/2022061114/5461f1d7b1af9f86228b4d0a/html5/thumbnails/1.jpg)
Structures and bridges
By hospital 991
![Page 2: Lippy](https://reader033.vdocuments.site/reader033/viewer/2022061114/5461f1d7b1af9f86228b4d0a/html5/thumbnails/2.jpg)
The arch bridge is used for heavy weight objects.
When a heavy object applies on the bridge all the weight pushes to the supporters on the left and right.
Arch bridge
![Page 3: Lippy](https://reader033.vdocuments.site/reader033/viewer/2022061114/5461f1d7b1af9f86228b4d0a/html5/thumbnails/3.jpg)
Beam bridge
A beam bridge has two supporters on each end
A longer beam bridge may be supported by additional piers[vertical supports]
![Page 4: Lippy](https://reader033.vdocuments.site/reader033/viewer/2022061114/5461f1d7b1af9f86228b4d0a/html5/thumbnails/4.jpg)
Truss bridges
A truss bridge is light weight but strong and made of trusses[triangle – shaped frames] along its sides.
![Page 5: Lippy](https://reader033.vdocuments.site/reader033/viewer/2022061114/5461f1d7b1af9f86228b4d0a/html5/thumbnails/5.jpg)
Suspension bridge
The to end s of the bridge may be hung by trees. A modern suspension bridge has tall towers on either end that support the main cables holding up the bridge. The main cables are anchored to concrete to hold up the bridge.
![Page 6: Lippy](https://reader033.vdocuments.site/reader033/viewer/2022061114/5461f1d7b1af9f86228b4d0a/html5/thumbnails/6.jpg)
Solid structure
A solid structure is formed from a solid piece or a solid combination of pieces of strong material. A solid is not halo. A sold structure is more stronger than a frame and a shell structure. A solid has little space or none at all.
![Page 7: Lippy](https://reader033.vdocuments.site/reader033/viewer/2022061114/5461f1d7b1af9f86228b4d0a/html5/thumbnails/7.jpg)
Frame structure
A frame structure is made up of a rigid arrangement of parts or structural components, fastened together. Example is an a skeleton.
![Page 8: Lippy](https://reader033.vdocuments.site/reader033/viewer/2022061114/5461f1d7b1af9f86228b4d0a/html5/thumbnails/8.jpg)
Shell structure
A shell structure has a solid outer surface, witch may be rounded or a flat shape.
![Page 9: Lippy](https://reader033.vdocuments.site/reader033/viewer/2022061114/5461f1d7b1af9f86228b4d0a/html5/thumbnails/9.jpg)
shearShear is a force that acts to push parts that are contact with each other in opposite directions. Structures with parts that must resist shear in clude doors, airplanes, and scissors.
![Page 10: Lippy](https://reader033.vdocuments.site/reader033/viewer/2022061114/5461f1d7b1af9f86228b4d0a/html5/thumbnails/10.jpg)
Tension
Tension is a force that acts to stretch and pull apart something
![Page 11: Lippy](https://reader033.vdocuments.site/reader033/viewer/2022061114/5461f1d7b1af9f86228b4d0a/html5/thumbnails/11.jpg)
CompressionCompression is a force that acts to squeeze an object or push parts within an object together.
![Page 12: Lippy](https://reader033.vdocuments.site/reader033/viewer/2022061114/5461f1d7b1af9f86228b4d0a/html5/thumbnails/12.jpg)
Compression, tension and shear
Internal forces can be classified by the direction in witch they act within an objects.