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Fence Post Bay Equal Spacing

Divide an explicit straight fence run into equal post-center bays including both endpoint posts.

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Description

Calculate equal fence-post bay spacing over a supplied run.

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 equal fence-post bay spacing over a supplied run.

When to use this tool

Use Fence Post Bay Equal Spacing when you already have totalRun, postCount and need to calculate equal fence-post bay spacing over a supplied run.

How to use the tool and how it works

  1. Enter totalRun, postCount. 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 bayCount, equalCenterSpacing. Use the output convention below.

Require run>=0 and safe whole postCount>=2; bays=posts-1 and centerSpacing=run/bays.1

Input fieldMeaning and unitsAccepted input
totalRunTotal RunRequired. Finite number; minimum 0.
postCountAt least two posts in an open chain, making postCount-1 bays; no closed-loop correction.Required. Safe integer; minimum 2.
Output fieldInterpretationReturned shape
bayCountBay CountRequired. Safe integer.
equalCenterSpacingEqual Center SpacingRequired. Finite number.
json
{
  "input": {
    "totalRun": 24,
    "postCount": 7
  },
  "output": {
    "bayCount": 6,
    "equalCenterSpacing": 4
  }
}

Limitations and assumptions

  • Assumes one open chain of posts; corner layout, post width, foundations, material strength and compliance are excluded.
  • 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/fence-post-bay-equal-spacing — tool.io

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