Integrate methods for assessing risks.
Prepare a rubric for classifying risk.
Report results of risk analysis.
There are many methods for categorical prediction using principal components. In this Assignment, you will practice one of these — linear discriminant analysis, in R Studio. You will classify risk through the rubric of a risk matrix and then build a model to assess the risk. Once you have built a model, you will report and explain the results.
Much has been made of the deteriorating public infrastructure in the United States. Roads, bridges, sidewalks, etc. need repair all over the country. This Assignment will focus on bridges. Engineers with responsibility for bridges categorize them into one of four categories with respect to risk: Monitor, Schedule Assessment, Schedule Repair/Replacement, or Immediate Repair/Replacement. Monitor means that the bridge is in good condition and is not in danger of failing. Schedule Assessment means that the bridge is showing signs of risk and should be evaluated. Schedule Repair/Replacement means that the bridge has deterioration that presents risk to users. Immediate Repair/Replacement means that the bridge has deterioration that presents risk of failure. In a Word document, create a four-quadrant risk matrix rubric and label the quadrants High Risk/High Impact; High Risk/Low Impact; Low Risk/High Impact; Low Risk/Low Impact. Place each of the four bridge conditions into the quadrant that you believe is appropriate for that condition. You need not have something in each of the four quadrants – your task is to appropriately assess and classify risk based on bridge condition. For each of the four bridge conditions, within the quadrant you selected in the risk matrix, give an example of an issue that may arise if the risk condition is not addressed.
Full Answer Section
Examples of Issues for Each Bridge Condition
Monitor
- Minor cracks in the pavement
- Minor rust on the steel girders
- Minor deterioration of the concrete deck
Schedule Assessment
- Larger cracks in the pavement
- More extensive rust on the steel girders
- More significant deterioration of the concrete deck
Schedule Repair/Replacement
- Large cracks in the pavement that are causing potholes
- Extensive rust on the steel girders that is causing structural instability
- Significant deterioration of the concrete deck that is causing spalling and delamination
Immediate Repair/Replacement
- Large cracks in the pavement that are causing the bridge to sag
- Extensive rust on the steel girders that is causing the bridge to become structurally unsound
- Significant deterioration of the concrete deck that is causing the bridge to collapse
Risk Assessment Model
In addition to the risk matrix, a risk assessment model can be used to quantitatively assess the risk of bridge failure. This model would take into account a number of factors, such as the age of the bridge, the type of bridge, the traffic load on the bridge, and the condition of the bridge. The model would then output a risk score that could be used to prioritize bridges for repair or replacement.
Reporting Results
The results of a risk assessment should be reported to the appropriate decision-makers. This report should include the risk matrix, the risk assessment model output, and any other relevant information. The report should also make recommendations for how to address the identified risks.
Conclusion
Bridge risk assessment is an important tool for ensuring the safety of the public. By using risk matrices and risk assessment models, engineers can identify and prioritize bridges that are at risk of failure. This information can then be used to make informed decisions about how to repair or replace these bridges.