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 China Wood Industry Network

Log inspection: long term inspection quantity of raw wood (GB / T 144-2003)

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Log →   Log inspection →   Long term inspection of raw wood

Long term inspection of raw wood

No. Measuring position Measurement method graphical explain
one Length inspection between sections at both ends of reducer Take the direct inspection quantity at the shortest distance  Length inspection between sections at both ends of reducer If the timber length measured is less than the gauge length specified in the log standard but does not exceed the negative deviation, it shall still be calculated according to the gauge length specified in the standard. If the negative deviation is exceeded, it shall be calculated according to the next level of gauge length
two The remaining section of the big head axe or the Hawthorn section under the chain saw If the big head is round or sharp (without cross section at the root), the length of the wood should be measured from the upper edge of the ax mouth  Big head axe notch If the short diameter of this section is not less than the diameter of the measuring ruler after entering the shed, the length of the timber shall be measured from the end of the big head; If it is smaller than the check-in diameter, the tree length should make the cloud less than the length of the check-in diameter, or take the short diameter as the check-in diameter
three Inspection of logs with water holes near the end When measuring the length of the material, the length from the inner side of the cloud water eye to the end should be allowed  Logs with water holes near the end When measuring the length of logs with water holes near the end, the length from the inner side of cloud water hole to the end head shall be determined