Quick Answer
Calculate Rockfill Dam Zone Permeability Gradient Ratio Checker
Calculator
Result Interpretation
Rockfill Dam Zone Permeability Gradient Ratio Checker Calculator computes Permeability gradient ratio in dimensionless using the defined engineering formula and the input values provided.
Worked Example
Verified calculation
Given:
- Rockfill zone hydraulic conductivity = 0.02
- Rockfill zone D85 grain size = 0.12
- Adjacent filter layer hydraulic conductivity = 1.0E-5
- Filter material D15 grain size = 0.00025
Expected Result:
- Permeability gradient ratio = 4.1666666666667
Engineering Interpretation:
Under the given input conditions, the calculated result is: Permeability gradient ratio = 4.1666666666667 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
permeability gradient ratio = (rockfill zone hydraulic conductivity / adjacent filter layer hydraulic conductivity) * (filter material d15 grain size / rockfill zone d85 grain size)Formula family: formula_dam_rockfill_dam_zone_permeability_gradient_checker
Variables
| Symbol | Label | Role | Description |
|---|---|---|---|
| k_zone | Rockfill zone hydraulic conductivity | INPUT | Rockfill zone hydraulic conductivity |
| k_filter | Adjacent filter layer hydraulic conductivity | INPUT | Adjacent filter layer hydraulic conductivity |
| D15_filter | Filter material D15 grain size | INPUT | Filter material D15 grain size |
| D85_zone | Rockfill zone D85 grain size | INPUT | Rockfill zone D85 grain size |
| result | Permeability gradient ratio | OUTPUT | Permeability gradient ratio |
Calculation Steps
- Enter the rockfill zone hydraulic conductivity in m/s.
- Enter the adjacent filter layer hydraulic conductivity in m/s.
- Enter the filter material d15 grain size in m.
- Enter the rockfill zone d85 grain size in m.
- Step 1: Compute permeability gradient ratio.
- Read the permeability gradient ratio (dimensionless) from the results.
Engineering Summary
Calculate Rockfill Dam Zone Permeability Gradient Ratio Checker
Frequently Asked Questions
What does this calculator calculate?
The Rockfill Dam Zone Permeability Gradient Ratio Checker Calculator estimates Permeability gradient ratio based on the input parameters you provide
Why is rockfill zone hydraulic conductivity important in this calculation?
rockfill zone hydraulic conductivity is directly proportional to permeability gradient ratio. When you enter rockfill zone hydraulic conductivity in m/s, the calculator uses it in the engineering formula to compute the output
How should I interpret the result permeability gradient ratio?
The calculator outputs permeability gradient ratio 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: Rockfill zone hydraulic conductivity (m/s), Adjacent filter layer hydraulic conductivity (m/s), Filter material D15 grain size (m), Rockfill zone D85 grain size (m). 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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