| A | B |
|---|
| Compression | This force is defined as a force that acts to compress or shorten the thing that it is acting upon. In other words it is a force that squeezes. |
| Tension | This force is defined as a force that acts to expand or lengthen the thing that it is acting upon. In other words it is a force that stretches. |
| Truss | A pattern of triangles and additional beams used to spread the forces on a beam bridge |
| Through truss | In this type of truss bridge, the supporting trusses are placed above the roadway |
| 200 feet | How far can a BEAM BRIDGE safely span? |
| Height | In a beam bridge, the forces of compression and tension on a beam bridge are dissipated by increasing the beam’s what? |
| Beam Bridge | This type of bridge can safely span a distance of up to 200 feet |
| Tension and Compression | The purpose of a truss is to put more material where it is needed along the top and bottom of the bridge where the forces of ________________ and ________________ are the greatest. |
| Dissipation | This is the spreading out of force or weight over a greater area so that no one area has to deal with a large amount |
| Compression | This force occurs along the TOP half of the beam in a beam bridge |
| Tension | This force occurs along the BOTTOM half of the beam in a beam bridge |
| Span | The distance between two bridge supports |
| Deck truss | In this type of truss bridge, the supporting trusses are placed under the roadway |
| Tension and Compression | These are the two major forces we looked at on each bridge |
| Beam Bridge | A rigid horizontal structure that is resting on two piers, one at each end |
