Pergola Rafter Spacing Calculator

October 6, 2023 by Leave a Comment

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What is a Pergola Rafter Spacing Calculator?

A Pergola Rafter Spacing Calculator is a tool that helps determine the optimal spacing between rafters (horizontal beams) in a pergola structure.

The rafter spacing affects the amount of shade provided and the overall visual appeal of the pergola.

Using this calculator is essential because it helps achieve the desired aesthetic and structural goals for your pergola project.

It ensures that the rafters are evenly spaced and provide the right amount of shade.

Recommended Pergola Rafter Spacing: Approximately ${requiredSpacing} inches between rafters.

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Input the span length (distance between the pergola's support posts) in feet.
Input the width of a single rafter (in inches).
Click the "Calculate" button.
The calculator will provide the recommended pergola rafter spacing in inches between rafters.

Let's say you have the following parameters:

Using these values in the provided HTML code:

Maximum Rafter Spacing (S) = Rafter Width (W) / 2 = 4 / 2 = 2 inches (assuming half the rafter width as the maximum spacing).
Required Rafter Spacing = Span Length (L) / Maximum Rafter Spacing (S) = 10 / 2 = 5.

So, the recommended pergola rafter spacing, in this example, is approximately 5 inches between rafters.

This spacing ensures that the rafters are evenly distributed across the span and provide the desired amount of shade for your pergola

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