Quick Answer
Calculate Roadway Longitudinal Joint Failure Probability Predictor
Calculator
Result Interpretation
Roadway Longitudinal Joint Failure Probability Predictor Calculator computes Failure Probability in dimensionless using the defined engineering formula and the input values provided.
Worked Example
Verified calculation
Given:
- Axle Configuration and Annual ESALs = 2.5
- Compaction Ratio Across Joint = 94
- Tack Coat Application Rate = 0.25
- Average Joint Temperature Differential = 8
Expected Result:
- Failure Probability = 0.0021155562939897
Engineering Interpretation:
Under the given input conditions, the calculated result is: Failure Probability = 0.0021155562939897 dimensionless.
The actual numerical result is computed by the Runtime engine using the persisted tool definition. The values shown here come from automatically validated test cases.
Formula / Method
failure probability = 0.025 * pow(axle configuration and annual esals, 0.82) * pow(average joint temperature differential, 1.35) * exp(-0.48 * tack coat application rate) * pow((100.0 - compaction ratio across joint) / 100.0, 2.1)Formula family: formula_roads_roadway_longitudinal_joint_performance_predictor
Variables
| Symbol | Label | Role | Description |
|---|---|---|---|
| axle_configuration_and_annual_esals | Axle Configuration and Annual ESALs | INPUT | Axle Configuration and Annual ESALs |
| average_joint_temperature_differential_celsius | Average Joint Temperature Differential | INPUT | Average Joint Temperature Differential |
| tack_coat_application_rate_gal_per_yd2 | Tack Coat Application Rate | INPUT | Tack Coat Application Rate |
| compaction_ratio_across_joint_percent | Compaction Ratio Across Joint | INPUT | Compaction Ratio Across Joint |
| failure_probability | Failure Probability | OUTPUT | Failure Probability |
Calculation Steps
- Enter the axle configuration and annual esals in dimensionless.
- Enter the average joint temperature differential in °C.
- Enter the tack coat application rate in gal/yd².
- Enter the compaction ratio across joint in %.
- Step 1: Compute failure probability.
- Read the failure probability (dimensionless) from the results.
Engineering Summary
Calculate Roadway Longitudinal Joint Failure Probability Predictor
Frequently Asked Questions
What does this calculator calculate?
The Roadway Longitudinal Joint Failure Probability Predictor Calculator estimates Failure Probability based on the input parameters you provide
Why is axle configuration and annual esals important in this calculation?
axle configuration and annual esals is directly proportional to failure probability. When you enter axle configuration and annual esals in dimensionless, the calculator uses it in the engineering formula to compute the output
How should I interpret the result failure probability?
The calculator outputs failure probability in dimensionless. The result is computed directly from the input values using the defined engineering formula
What units should I use for the inputs?
Enter each value in the units shown next to the input field: Axle Configuration and Annual ESALs (dimensionless), Average Joint Temperature Differential (°C), Tack Coat Application Rate (gal/yd²), Compaction Ratio Across Joint (%). Make sure all inputs use the specified units for consistent results
What assumptions does this calculator use?
This calculator uses automatically validated engineering formulas. Results are approximate and should be validated against site-specific conditions, applicable codes, and professional engineering judgment
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