LY/T 1370-2002Long wood bucking (English PDF)

4.1 Material and material principle

4.1.1 The material is to be scientifically measured according to GB/T 144 and related log product standards and market demand. The measuring tape should be accurate and the marking should be obvious.

And leave a proper kerf length.

4.1.2 The foundry shall cut the wire under the wire design plan and shall not change the sawing by itself. When the material is made, the distance between the long and short faces of the kerf is not More than the long-term tolerance of the logs, to prevent cracking and sawing the adjacent wood.

4.2 Measuring materials, methods of making materials

4.2.1 The normal original strip with straight trunk, small sharpness, few knots and no other defects should be designed according to market demand.

High quality or long material.

4.2.2 Small diameter original strips, multi-section original strips, and tip woods shall be reasonably determined according to market demand.

4.2.3 Decaying the original strip, it should be inferior to stay in good condition, take the root and tip decay to cut off or design the short material, the middle of the method of decaying the pumping section.

4.2.4 The original section of the missing section is made on a piece of log or separately on two sections of logs.

4.2.5 The original strip of the knot shall be based on the standard of the log product, and the number of needles, broadleaf knots, size, joints, dead knots, etc. shall be on a piece of log, scattered on two sections of logs or on the section of the log, not in the tree bag, tree tumor, decay section and missing section Line material.

4.2.6 For longitudinal cracks and outer strips, the defects shall be designed on a section of logs or distributed on two sections of logs. Through cracking and bursting