Formula and input notes
Repeated stations = ceil(ceil[run length ÷ spacing] + 1, then apply the entered allowance)
| Input | Practical note |
|---|---|
| Spacing | This is the Board-on-Board Fence Calculator layout value for spacing; confirm whether the drawing specifies clear or on-center spacing. |
Worked board-on-board fence example
Board-on-Board Fence Calculator example: A 107-ft run at 8-ft spacing gives ceil(107 ÷ 8) + 1 = 15 layout stations. With 5% allowance, the estimate rounds to 16.
Use the count as a baseline
Use this result for the support-post baseline only, then use the picket calculator or a bay layout for the overlapping boards.
Posts, gates, and field conditions
Alternating boards, overlap, shrinkage, rails, cap boards, corners, gates, grade changes, and wind exposure drive the full material count.
Questions specific to this calculation
What does one repeated station represent for board-on-board fence?
The visible spacing calculator estimates repeated post stations along a run; board-on-board infill requires a separate overlap and picket-width layout.