Home
BackFence Material and Posts Calculator
Unit Converter ▲
Unit Converter ▼
| From: | To: |
How to Calculate Fence Materials and Posts
Number of Posts = Ceiling(Fence Length / 8) + 1
Total Number of Rails = (Number of Posts - 1) * Number of Rails
Number of Pickets = (Fence Length * 12) / (Picket Width + Picket Gap)
Cement Bags = Calculated based on fence length
Screws/Nails = Calculated based on fence length
Calculation Formula
The formula to calculate the number of posts is:
\[ \text{Number of Posts} = \frac{\text{Fence Length (ft)}}{8} + 1 \]
The formula to calculate the total number of rails is:
\[ \text{Total Number of Rails} = (\text{Number of Posts} - 1) \times \text{Number of Rails} \]
The formula to calculate the number of pickets is:
\[ \text{Number of Pickets} = \frac{\text{Fence Length (ft)} \times 12}{\text{Picket Width (in)} + \text{Picket Gap (in)}} \]
The formula to calculate the amount of cement bags is:
\[ \text{Cement Bags} = \begin{cases} 3 & \text{if } \text{Fence Length} < 9 \\ 4 & \text{if } 9 \leq \text{Fence Length} < 19 \\ 5 & \text{if } 19 \leq \text{Fence Length} < 29 \\ \lceil \frac{\text{Fence Length}}{10} \rceil + 2 & \text{if } \text{Fence Length} \geq 29 \end{cases} \]
The formula to calculate the amount of 1-1/2" screws/nails is:
\[ \text{1-1/2" Screws/Nails (lbs)} = \lceil \frac{\text{Fence Length}}{20} \rceil \]
The formula to calculate the amount of 3-1/2" screws/nails is:
\[ \text{3-1/2" Screws/Nails (lbs)} = \lceil \frac{\text{Fence Length}}{30} \rceil \]