Sawmill Short Course Log Inputs – Measurement & Conversion ...

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Smalian Rule The average basal area is estimated by measuring diameter inside bark at both log ends, computing basal area for both diameters, and then multiplying the average of the two basal areas by the log length Cubic foot volume = Cubic foot volume = (Small end BA + Large end BA) (Small end BA + Large end BA) x Log length x Log length 2
Two-end Two end Conic Rule The log is considered to be a frustrum of a cone Cubic foot volume = 0.005454L x [D 2 (SE) + D2 D (LE) + D(SE) + D(LE] Relatively new rule provided as an option by the Columbia River Log Scaling and Grading Bureau 3
Page 1 and 2: Sawmill Short Course Log Inputs - M
Page 3 and 4: Common Log Measurements Board Foot
Page 5 and 6: Cubic Foot of Wood Defined as a so
Page 7 and 8: Linear Foot of Wood A wood member
Page 9 and 10: Board foot log rules Cubic foot sc
Page 11 and 12: Log Scaling Assumptions The log is
Page 13 and 14: Merchantability Guidelines Guidelin
Page 15 and 16: Defect Classifications (Region 2) 1
Page 17 and 18: Squared Defect Method Defective ar
Page 19 and 20: Length Deduction Method Used when
Page 21 and 22: Bucking Logs for Scale (Value) Buck
Page 23: Cubic Foot Measure Cubic foot rule
Page 27 and 28: Is there a best system? - The case
Page 29 and 30: Benefits of Weight Scaling Reduced
Page 31 and 32: Weight Scale Factors Can use stand
Page 33 and 34: Estimating the Number of Sample Tru
Page 35 and 36: Conversion Factors for Log/Lumber M
Page 37 and 38: Conversion Factors for Log/Lumber M
Page 39 and 40: Log Grading Definition: Classifying
Page 41 and 42: Log Grades (Example)
Page 43 and 44: Grading strategies for small mills

Sawmill Short Course Log Inputs – Measurement & Conversion ...

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