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Lecture Goals. ServiceabilityCrack widthMoments of inertia. Introduction. Ultimate Limit States Lead to collapseServiceability Limit States Disrupt use of Structures but do not cause collapse. Recall:. . . Introduction. Types of Serviceability Limit States- Excessive crack width- Excessive deflection- Undesirable vibrations- Fatigue (ULS).
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1. Lecture 34 - Elastic Flexural Analysis for Serviceability November 20, 2001
CVEN 444
3. Introduction
4. Introduction
5. Crack Width Control
6. Crack Width Control
7. Crack Width Control
8. Crack Width Control
9. Crack Width Control Appearance (smooth surface > 0.01 to 0.013 public concern)
Leakage (Liquid-retaining structures)
Corrosion (cracks can speed up occurrence of corrosion)
10. Crack Width Control Chlorides ( other corrosive substances) present
Relative Humidity > 60 %
High Ambient Temperatures (accelerates chemical reactions)
Wetting and drying cycles
Stray electrical currents occur in the bars.
11. Limits on Crack Width
12. Limits on Crack Width
13. Limits on Crack Width
14. Limits on Crack Width
15. Limits on Crack Width
16. Limits on Crack Width
17. Example-Crack
18. Example-Crack
19. Example-Crack
20. Example-Crack
21. Example-Crack
22. Example-Crack
23. Example-Crack
24. Deflection Control
25. Deflection Control
26. Allowable Deflections
27. Allowable Deflections
28. Allowable Deflections
29. Allowable Deflections
30. Allowable Deflections
31. Allowable Deflections
32. Moment of Inertia for Deflection Calculation
33. Moment of Inertia for Deflection Calculation
34. Moment of Inertia for Deflection Calculation
35. Moment Vs curvature plot
36. Moment Vs Slope Plot
37. Moment of Inertia
38. Deflection Response of RC Beams (Flexure)
39. Deflection Response of RC Beams (Flexure)
40. Deflection Response of RC Beams (Flexure)
41. Uncracked Transformed Section
42. Cracked Transformed Section
43. Cracked Transformed Section
44. Cracked Transformed Section
45. Uncracked Transformed Section
46. Cracked Transformed Section
47. Cracked Transformed Section
48. Reinforced Concrete Sections - Example
49. Reinforced Concrete Sections - Example
50. Reinforced Concrete Sections - Example
51. Reinforced Concrete Sections - Example
52. Reinforced Concrete Sections - Example
53. Reinforced Concrete Sections - Example
54. Reinforced Concrete Sections - Example
55. Reinforced Concrete Sections - Example
56. Reinforced Concrete Sections - Example
57. Reinforced Concrete Sections - Example
58. Reinforced Concrete Sections - Example
59. Reinforced Concrete Sections - Example
60. Reinforced Concrete Sections - Example
61. Homework-12/2/02
