Quick Answer
Calculate USBR/ICOLD Spillway Overtopping Freeboard Requirement
Calculator
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Find Engineering Solutions →Result Interpretation
USBR/ICOLD Spillway Overtopping Freeboard Requirement calculator computes Required freeboard in m using the defined engineering formula and the input values provided. Required freeboard is expressed in m. No universal acceptance threshold is defined by this calculator.
Worked Example
Verified calculation
Given:
- Design flood water depth above spillway crest = 2.5
- Wave runup height on spillway face = 1.8
- Safety margin for uncertainty and settlement = 0.75
Expected Result:
- Required freeboard = 5.05
Engineering Interpretation:
Under the given input conditions, the calculated result is: Required freeboard = 5.05 m.
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
required freeboard = design flood water depth above spillway crest + wave runup height on spillway face + safety margin for uncertainty and settlementFormula family: formula_dam_spillway_overtopping_freeboard_requirement_calculator_usbricold
Variables
| Symbol | Label | Role | Description |
|---|---|---|---|
| H_d | Design flood water depth above spillway crest | INPUT | Design flood water depth above spillway crest |
| R_u | Wave runup height on spillway face | INPUT | Wave runup height on spillway face |
| F_s | Safety margin for uncertainty and settlement | INPUT | Safety margin for uncertainty and settlement |
| freeboard | Required freeboard | OUTPUT | Required freeboard |
Calculation Steps
- Enter the design flood water depth above spillway crest in m.
- Enter the wave runup height on spillway face in m.
- Enter the safety margin for uncertainty and settlement in m.
- Step 1: Compute required freeboard.
- Read the required freeboard (m) from the results.
Engineering Summary
Calculate USBR/ICOLD Spillway Overtopping Freeboard Requirement
Frequently Asked Questions
What does this calculator calculate?
The USBR/ICOLD Spillway Overtopping Freeboard Requirement calculator estimates Required freeboard based on the input parameters you provide
Why is design flood water depth above spillway crest important in this calculation?
design flood water depth above spillway crest is directly proportional to required freeboard. When you enter design flood water depth above spillway crest in m, the calculator uses it in the engineering formula to compute the output
How should I interpret the result required freeboard?
The calculator outputs required freeboard in m. 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: Design flood water depth above spillway crest (m), Wave runup height on spillway face (m), Safety margin for uncertainty and settlement (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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