|
Grade Rule
|
Contours Ultra Select
|
Select
|
|
Bark pockets
|
None
|
Medium
|
|
Checks
|
None
|
Medium
|
|
Crook
|
Light, occasional piece
|
Light, occasional piece
|
|
Holes
|
None
|
Equivalent to chipped knots
|
|
Pitch
|
None
|
Light, or equivalent, very small streak
|
|
Pitch Pockets
|
None on face
|
Very small, dry
|
|
Rate of Growth
|
Light to Medium
|
Medium Grain
|
Skips (face)
(back)
|
None on face
Occasional Pieces
|
Very light, maximum 10% of face in occasional pieces
Hit and miss skips full length
|
|
Slope of Grain
|
1 in 10
|
1 in 10
|
|
Splits
|
None
|
Short, occasional piece
|
|
Stained Wood (Blue Stain)
|
Light (back only - occasional piece)
|
Medium (face and back)
|
|
Torn or Raised Grain
|
None
|
Medium
|
|
Tongue
|
1/16" scant, occasional piece
|
1/16" scant, occasional piece
|
|
Twist
|
Very light, occasional piece
|
Very light, occasional piece
|
|
Knots
|
Sound and tight on face and back, no unsound knots on face or back. No holes
|
Sound and tight on exposed face, well spaced. Knots may contain chipped or
unsound spots approximately 3/4" in diameter, not through 2 per 12 lin. ft.
|
|
Wane (face)
|
None
|
Pencil wane allowed, occasional piece
|
|
Wane (back and unexposed edges)
|
Pencil wane, occasional piece
|
Wane approximately 1/3 face
|
