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Spiral Tree

This calculator is to assist in designing a spiral tree. The calculations are based on a spreadsheet I found on the Lights on Sixth web site.

For those that prefer imperial measurements, just key it in as feet instead of metres as read the results as feet as well. The only oddity there will be decimalised (it’s a word – maybe!) feet in the results.

You can also use this calculator for standard (non-spiral) trees. Just key in the tree height and base diameter and use the support length for as string length instead.

Suggestions for improvements appreciated.