| Grade
Description |
1
|
2
|
3
|
4
|
| |
(Sound,
same species, specify cut)
|
(Solid,
same species, specify cut)
|
(Any
solid back, other species)
|
(Reject
back)
|
| |
| Sapwood |
Yes
|
Yes
|
Yes
|
Yes
|
| Discolouration
& Stain |
Yes
|
Yes
|
Yes
|
Yes
|
| Mineral
Streaks |
Yes
|
Yes
|
Yes
|
Yes
|
| Sound Tight
Burls |
Yes
|
Yes
|
Yes
|
Yes
|
| Sound Tight
Knots |
Max. Diameter
3/8"
|
Max. Diameter
3/4"
|
Max. Diameter 1
1/2"
|
Yes
|
| Maximum Number
of Tight Knots |
16
|
16
|
Unlimited to
1/2";
No more than 16
from 1/2" to 1 1/2"
|
Unlimited
|
| Knot Holes |
No
|
3/8" Repaired
|
1" Repaired
|
3"
|
Maximum
Combined Number of Knot Holes and
Repaired Knots |
Nonea
|
All Repaired;
Unlimited to 3/8"
|
Unlimited to
3/8";
No more than 10
from 3/8" to 1" - Repaired
|
Unlimited
|
| Wormholes |
Filledb
|
Filledb
|
Yes
|
Yes
|
| Splits or
Joints |
Six
1/8"x12"
Repaired
|
Six
3/16"x12"
Repaired
|
Yes 3/8" by
1/4 length of panel
Repaired
|
1" for
one-fourth length of panel;
1/2" for one-half length of panel;
1/4" for full length of panel.
|
| Doze &
Decay |
Firm areas of doze
No decay
|
Firm areas of doze
No decay
|
Firm areas of doze
No decay
|
Areas of doze and
decay provided serviceability of panel is not impaired.
|
| Rough Cut |
Two 8" areas
|
Yes
|
Yes
|
Yes
|
| Ruptured Grain |
Slight
|
Some
|
Yes
|
Yes
|
| Bark Pockets |
1/8" wide -
Repaired
|
1/4" wide -
Repaired
|
Repaired
|
Yes
|
| Laps |
No
|
Repaired
|
Repaired
|
Yes
|
