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Calculate total green or air-dry log weight and Doyle log rule board feet to prevent equipment overloading during timber harvesting.
A 16-foot long green spruce log with a 16-inch small-end diameter weighs approximately 890 to 950 lbs (0.47 tons) and yields roughly 144 board feet of lumber under the Doyle Log Rule. Heavier hardwoods like birch or red oak can weigh over 1,600 lbs for the exact same dimensions.
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Calculated Log Weight
Note: Freshly cut green logs contain up to 50% water by weight. Always verify trailer axle payload capacities.
Calculate timber weight carefully before loading flatbed trailers to avoid exceeding DOT gross vehicle weight ratings (GVWR).
Common questions regarding this calculation and code compliance
A 16-foot green birch log with a 14-inch average diameter weighs approximately 1,150 to 1,300 lbs.
