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Berm Side Run Length

Resolve explicit berm rise and supplied horizontal-per-vertical side ratio into run and side length without assessing slope stability.

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Description

Calculate a berm side's horizontal run and sloped length.

Landscape geometry distinguishes plan area, depth, void fraction, grade, center spacing and nominal clearances. A horizontal-per-vertical slope is the inverse orientation of rise/run, and post counts differ from bay counts. Supplied geometric terms do not establish stability, drainage, accessibility or safe construction.

Calculate a berm side's horizontal run and sloped length.

When to use this tool

Use Berm Side Run Length when you already have bermRise, suppliedHorizontalPerVertical and need to calculate a berm side's horizontal run and sloped length.

How to use the tool and how it works

  1. Enter bermRise, suppliedHorizontalPerVertical. Use the units and conventions below.
  2. Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
  3. Read horizontalRun, slopedLength. Use the output convention below.

Require rise>=0 and suppliedHorizontalPerVertical>=0; run=rise*ratio and slopedLength=hypot(rise,run).1

Input fieldMeaning and unitsAccepted input
bermRiseBerm RiseRequired. Finite number; minimum 0.
suppliedHorizontalPerVerticalNonnegative horizontal run per vertical rise, not its reciprocal.Required. Finite number; minimum 0.
Output fieldInterpretationReturned shape
horizontalRunHorizontal RunRequired. Finite number.
slopedLengthSloped LengthRequired. Finite number.
json
{
  "input": {
    "bermRise": 3,
    "suppliedHorizontalPerVertical": 4
  },
  "output": {
    "horizontalRun": 12,
    "slopedLength": 12.36931687685298
  }
}

Limitations and assumptions

  • The ratio is horizontal/vertical, not rise/run; no soil stability, drainage behavior or appropriate berm slope is established.
  • Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
  • Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.

Alternative or Complementary methods

Use a verified site survey and complete dimensioned layout for a landscape design. Include material behavior, drainage, ground conditions and the applicable requirements when local volumes, grades or spacing calculations cannot answer the full question.

References

  1. Calculation and input contract: landscape-architecture/berm-side-run-length — tool.io

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