1. Structural Components
1. Arches
2. Beams
3. Columns

2. Arches
Can support large load because the load is carried throughout the arch shape

5. Beam - Flat structure supported at each end
Simple beam

6. I Beam

7. Box Beam (Girder)

8. Truss - framework of beams, usually in a triangle shape

9. Cantilever – beam supported only at one end

10. Columns- a solid structure that stands by itself

11. Structural Stress, Fatigue, Failure
A combination of to much external and internal forces acting on a structure and weakens it

12. Structural Fatigue
Repeated abnormal use of a structure, a permanent change in the structure

13. Structural Failure
Happens when a structure can no longer stand up to the forces acting on it

16. Forms of Structural Failure
Buckling

17. Shearing
Separating of Components
Deformation

18. A structure needs strength and stiffness to avoid failure
The strength of a structure is defined by the load at which it fails
The stiffness of a structure is its ability to withstand changing its shape under a load

19. Section 2.4 Recap Main concepts Structural Shapes
Structural Components
Arches
Beams (Simple, I-Beam, Girders, Truss, Cantilever)
Columns
Structural Stress, Fatigue and Failure
Buckling, shearing, separating, deformation
Strength and stiffness of a structure