

| Defects per GOST 2140-81 |
1st |
2nd |
3rd |
4th |
5th |
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Size |
Qty |
Size |
Qty |
Size |
Qty |
Size |
Qty |
Size |
Qty |
|
| 4. Fungous infections. | Not acceptable |
Not acceptable |
Acceptable on the edges, but not on the butt-end (up to 1/5 of width and length of lumber). |
Acceptable on the edges up to 1/2 of width and length of lumber. On the butt-end - no more than 10% of butt-end surface. |
Acceptable |
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| 4.1 Fungous spots and stripes. | ||||||||||
|
4.2* Light sap-wood and mold. |
Not acceptable |
Not acceptable |
Acceptable on the layers and edges (no deeper than 2 mm) in the form of spots and stripes. The total surface of defects should be no more than 5% of the surface of one layer on all surfaces of a piece of lumber. |
Acceptable on layers and edges in the form of spots and stripes |
Acceptable |
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4.2.1 Surface |
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