| Categories of defects |
Permissible amount of defects
|
|
Permitted
|
| Sound intergrown knots |
Permitted up
to an individual maximum diameter of 25 mm
with total quantity not more
than 10 per sq. m
|
| Other knots and knot holes |
Permitted up
to an individual maximum diameter of 6 mm
with total quantity not more
than 6 per sq. m
Total number of knots should
not exceed 10 per sq. m
|
| Repaired Defects (inserts) |
No more ythan
8 pcs. per 1 sq. m of surface
|
| Double Inserts |
Not permitted
|
| Closed checks |
Permitted
for an individual maximum length up to 200 mm
and in number 2 per
1 meter of panel width
|
| Open checks (patched) |
Permitted
for an individual maximum width up to 2 mm
and for individual maximum
length up to 200 mm
and no more than 2 per 1
meter of panel width
|
| Maximum number of checks |
4 per 1 meter
of panel width
|
| Irregularities in the structure
of the wood |
Permitted
|
| Hearth and discoloration |
No more than
30% of the surface
|
| Defects at the edges due to
sanding or sawing |
Permitted up
to 4 mm from the edge
|
| Glue penetration |
Permitted up
to 2% of the surface
|
| Sanding through |
Not permitted
|
| Veneer overlapping in inner
plies |
Permitted for
an individual max. length up to 100 mm,
in number max. 1 per 1 meter of
a panel width
|
