Bridge Design
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Bridge Design
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25 Questions

1. In metal - a brittle cracking mechanism caused by repitive loading over time

2. In a bridge truss - a diagonal timber or support that slants away from the midpoint of the bridge.

3. A bridge support bearing that accommodates thermal expansion and contraction of the superstructure through a rocking action

4. Act of twisting; twisting of a body by two opposing forces

5. A structural member that projects beyond a supporting column or wall and is supported only at one end.

6. A basic underlying element- infrastructure. The bottom or lowest part of a structure.

7. A bridge typically composed of straight structural elements connected to form triangles.

8. A force that causes part of a material to slide past one another in opposite direction

9. The horizontal space between two supports of a structure

10. A loss of metal usually resulting from corrosion - that reduces the thickness of a steel bridge component

11. The bridge structure that supports the superstructure and transfers loads from it to the ground or bedrock. the main components are abutments - piers - footings - and pilings.

12. The vertical member connecting the upper and lower chords at the like- numbered nodes.

13. The bottom horizontal member of a truss. It extends the length of the deck truss but consists of shorter chord members spliced together

14. A bridge bearing comprising of a single roller or a group of rollers housed so as to permit longitun=dinal expansion or contraction

15. A bridge status assigned by the FHA under the National Bridge Inspection Standards. This type of bridge was built to the standards of the day but are not used today. These bridges are not considered inherently unsafe - but they may have lane widths -

16. A beam aligned with the length of a span that supports the deck

17. A plate that joins two chord members of a truss of that is used to extend the length of a member

18. A welded truss perpendicular to the main trusses - used to support the deck

19. Any member of a truss that is subjected to tensile forces

20. Frameworks of beams or girders used for support. A truss can be metal (steel) or of wooden construction.

21. A force that pushes or presses toward the center of an object or from the ends toward the middle of a structural member. Compression shortens the material. It is the opposite of tension.

22. A structure that allows people or vehicles to cross an obstacle such as a river or canal or railway etc.

23. A retaining wall that supports the ends of a bridge. It may be built of stone - bedrock - wood - iron - or concrete.

24. A force that stretches or pulls on a material. Tension lengthens a material - any material.

25. A vertical structure that supports the ends of a multispan superstructure at a location between abutments