WANE-FREE ‘A’ GRADE – STRUCTURAL
Characteristics permitted and limiting provisions shall be:
Checks - seasoning checks limited. Through checks at ends are limited as splits.
Knots - well spaced knots of any quality are permitted in the following sizes or their equivalent displacement:
| Nom. Width |
At Edge
Wide
Face |
Centerline
Wide
Face |
Holes
(any
cause)
|
| 2" |
5/8" |
5/8" |
5/8" |
| 3" |
7/8" |
7/8" |
7/8" |
| 4" |
1 1/4" |
2" |
1 1/4" |
| 5" |
1 5/8" |
2 3/8" |
1 3/8" |
| 6" |
1 7/8" |
2 7/8" |
1 1/2" |
| 8" |
2 1/2" |
3 1/2" |
2" |
| 10" |
3 1/4" |
4 1/4" |
2 1/2" |
| 12" |
3 3/4" |
4 3/4" |
3" |
Manufacture - Standard “F” Manuacture admits: very heavy torn grain; raised grain; very heavy loosened grain; heavy machine bite; machine gouge; heavy machine offset; chip marks; knife marks; medium wavy dressing; medium mismatch.
Pitch & Pitch Streaks - not limited.
|
|
Pockets - not permitted.
Shake - if through at ends, limited as splits. Away from ends through shakes up to 2’ long, well separated. If not through, singe shakes shall not exceed 3’ long or 1/4 the length, whichever is greater.
Skips - hit and miss, with a maximum of 5% of the pieces containing hit or miss or heavy skip 2’ or less in length.
Slope of Grain - 1 in 8.
Splits - equal in length to 1½ the width of the piece
Stain - bluestain allowed.
Unsound Wood - not permitted.
Wane - not permitted.
Warp - light.
White Speck & Honey Comb - not permitted |
