The Doyle Log Rule is a mathematical formula used to estimate the volume of lumber that can be sawn from a log. It considers the log’s diameter and length, making certain assumptions about saw kerf and board thickness. Tools implementing this formula, whether physical slide rules or digital applications, provide a quick, though often underestimated, volume calculation. For example, a 10-inch diameter log, 16 feet long, might yield a specific board foot volume according to the Doyle Rule.
This estimation method has historical significance in the timber industry, providing a standardized approach to log scaling, albeit one recognized for its tendency to undervalue smaller diameter logs. Despite its known inaccuracies, particularly with smaller logs, it remains a prevalent method for quick estimations in some regions and provides a baseline for comparing other, more precise scaling methods. Its simplicity contributes to its continued use, particularly in informal transactions.
