Sweep Percentage Deduction Calculator

Calculate the amount to deduct for a sweep defect based on the maximum deflection and the top end (small) diameter of the log.

A one-inch deflection is allowed for logs under 12 feet and a two-inch deflection for logs 12 feet and over.

Example calculation:

log length of 16 feet
top end diameter of 24 inches
the maximum deflection in the log is 9 inches
(9 - 2) ÷ 24 * 100 =
7 ÷ 24 * 100 =
0.29 * 100 = 29
For this log the volume is deducted by 19 %

Calculation

1. enter the length of the log in feet
2. small end diameter in inches
3. max deflection of the sweep

Result

1. the defect amount in a percentage

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• International 1/4-inch Log Rule
• International 1/4-inch Log Rule (Grosenbaugh)
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Defects

• Sweep Deduction
• Sweep Percentage Deduction

New

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