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Bridges
| Question | Answer |
|---|---|
| Which force pulls and stretches | Tension |
| Which force pushes and sqeezes? | Compression |
| Which force happens when parts slide past eachother | shear |
| Which force twists an object | torosion |
| who designs bridges | civil engineers |
| what helps strengthen truss bridges | triangles |
| typical lenght of a truss bridge | up to 600ft |
| what does an arch bridge mainly carry | commpresion |
| suspension bridges transfer their load using | cables |
| typical length for a modern suspension bridge | 2,000-7,000 feet |
| typical length for a cable stayed bridge | 500-3,00 feet |
| a beam bridge is supported by | piers/couloumns |
| griders are made of | iron steel or concreate |
| 3 main types of bridges | beam/truss,arch,suspension |
| five forces on bridges | compression,tension,bending,torosion,shear |