Term
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Definition
Involve a structural collapse of part or all of the structure.
1) loss of equilibrium (tipping/sliding)
2) rupture (of critical parts leading to collapse)
3) Progressive collapse (world trade centers)
4) formation of a plastic mechanism
5) Instability
6) Fatigue |
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Term
| Serviceability limit States |
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Definition
Disruption of the functional use, but not neccesarily collapse.
1) excessive deflections
2) excessive crack widths
3) undesireable Vibrations |
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Term
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Definition
Damage or failure due to abnormal conditions:
1) earthquakes
2) vehicular collisions
3) corrosion |
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Term
| Basic Design Relationship |
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Definition
| Resistance is > or = to load effects |
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Term
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Definition
Strength Reduction Factor
is < 1 |
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Term
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Definition
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Term
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Definition
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Term
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Definition
Current Design Code: members shall be designed to have design strengths at all sections at greater than or equal to the required strengths
*material strengths are not neccesarily in elastic region
*applied loads are increased by a factor of more than one |
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Term
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Definition
can't account for uncertainty, creep, shrinkage. Over estimates Materials
*material strengths are within elastic region
*applied loads are not factored |
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Term
| Permanent loads (D,F AND T) |
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Definition
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Term
| Principal variable loads (L,S and W) |
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Definition
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Term
| COmapnion-action variable loads (L,S and W) |
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Definition
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Term
Strength Reduction factors:
Tension controlled Sections |
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Definition
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Term
Strength Reduction factors:
Compression controlled sections
(spiral reinforcement) |
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Definition
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Term
Strength Reduction factors:
Compression-controlled sections
(other compression-controlled sections) |
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Definition
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Term
Strength Reduction factors:
Shear and torsion |
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Definition
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Term
Strength Reduction factors:
Bearing on Concrete |
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Definition
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Term
Strength Reduction factors:
Strut and Tie Model |
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Definition
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