1. Introduction to Bridge INspection
Bridge Building and Safety

2. Bridge of The God’s Construction

3. Types of Bridge Materials
Timber
Concrete Reinforced and Prestressed
Steel
Masonry

4. 3 Major Components of a Bridge
Deck
Superstructure
Substructure

5. Deck Deck distributes loads to the Superstructure
Carries the roadway surface

6. Superstructure Superstructure distributes loads to the Substructure.
Supports the Deck

7. Substructure
Supports the Superstructure and distributes load into the ground.

8. All 3 Components Working Together

9. Common Types of Bridges
Truss Bridge
Suspension Bridge
Arch Bridge

10. Common Types of Bridges
Slab Bridge (Simple Beam)
Cable Stay Bridge
Moveable Draw Bridge

11. Common Types of Bridges
Covered Bridge
Cantilever Bridge

12. Forces Tension Ex. Rubber Band Being Pulled Compression
Ex. Sponge Being Pushed Down

13. Bending
Compression
Tension

14. Real Life Example

15. How Would You Build a Strong Bridge?
Reinforcement (Ex. Rebar in Concrete)
Building Your Truss With Triangles
Because the triangle does not easily deform and is able to balance the stretching (tension) and compressive forces inside the structure.
Visualize what bridge members will have the most force put on them during judging. With that figure out how to get maximum strength in those members.

16. Problems Bridges Face Decay Corrosion Scour Loads from freight Fire
Settlement
Loss of Bearing Area
Movement
Distortion
Damage
Abrasion /Wear

17. Defects
Decay
Corrosion

18. Defects
Scour
Loads

19. Defects
Fire
Fire Results

20. Defects
Loss of Bearing
Settlement

21. Defects
Distortion
Movement

22. Defects
Damage

23. Defects
Abrasion

24. Inspection and Maintenance
Various Types of Inspections
Routine – Maximum every 2 years
Fracture Critical - Maximum every 2 years
Fatigue Prone
Timber Boring
Moveable Bridge
Deck Survey

25. Inspection and Maintenance
Replacing bridge members as needed
Cleaning off and removing debris
Fumigating Timber Members
Applying sealants and protective coatings

26. Load Rating

27. Preservation
Catholic Protection
Seismic Retrofit
Restricting Loads

28. Designing New Structures
New Materials
Construction and designing bridges that have higher load caring capacities

29. Gumdrop Bridge Plans

30. Gumdrop Bridge Plans