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Vinyl Fence Whole Panel Layers & Post Count

Count spans, posts, stacked panel layers and tie beams for a straight open fence run using supplied panel and post dimensions.

  • Formula & worked example
  • Private in your browser
  • No signup
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Calculator inputs

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How to use this calculator

  1. Enter the known values in the units shown. Results update as you type.
  2. Where results are editable, change one to solve backwards. Lock a value to hold it fixed.
  3. Use the worked example to check the method. Reset restores the starting fields.

Private by default

Inputs and results stay in this browser tab. Bookify does not upload or store the values you enter.

Formula and method

A 6.4 m run using 2 m wide panels and 10 cm posts requires three spans and four posts. A 1.1 m height using 40 cm panels needs three stacked layers, or nine panels.

Spans = ceil[(run − post width) / (panel width + post width)]; layers = ceil[fence height / panel height]

Worked example

Enter these known values and leave the other values blank.

Fence length
6.4 m
Fence height
1.1 m
Clear horizontal panel width
2 m
Height of one stacked panel
40 cm
Post width along the run
10 cm
Spans
3 spans
Whole purchased panel layers
3 layers
Columns needed
4 pieces
Panels needed
9 panels
Tie beams needed
3 beams

Assumptions and limitations

  • The captured geometry assumes a straight open run with a post at both ends and one tie beam per span. Corners, gates, closed loops and slopes are excluded.
  • Both spans and stacked layers round upward. The final panel or layer may require trimming or a compatible product size.
  • Solving backward from a whole layer count returns a compatible full-layer height, not a unique height within the ceiling interval.
  • Counts do not determine foundations, structural capacity, fasteners or local fence requirements.

Common questions

Why does the layer count round upward?

A partial layer still requires whole panels to span the fence. Two 40 cm layers cover only 80 cm, so a 110 cm fence needs three layers before any permitted trimming.

References

Bookify requires whole positive panel layers and a fence run longer than one post. Bookify rounds stacked fence layers upward to whole purchased panels while retaining compatible inverse dimensions.

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