STUD GRADE - 2" and WIDER
Characteristics permitted and limiting provisions shall be:
Checks - seasoning checks not limited. Through checks at ends are limited as splits.
Knots - not limited as to quality but are well spaced and are permitted in the following sizes or their equivalent displacement:
Nom. Width |
At Edge
Wide
Face |
Centerline
Wide
Face |
Holes
(any
cause)
|
2" |
3/4" |
3/4" |
3/4" |
3" |
1 1/4" |
1 1/4" |
1 1/4"" |
4" |
1 3/4" |
2 1/2" |
1 1/2" |
5" |
2 1/4" |
3" |
1 3/4" |
6" |
2 3/4" |
3 3/4" |
2" |
8" |
3 1/2" |
4 1/2" |
2 1/2" |
10" |
4 1/2" |
5 1/2" |
3" |
12" |
5 1/2" |
6 1/2" |
3 1/2" |
Manufacture - Standard âFâ 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 - pitch or bark, not limited.
Shake - if through at ends, limited as splits. Elsewhere through shakes 1/3 the length.
Skips - hit or miss on any face, with a maximum of 10% of the pieces containing heavy skips on wide faces only.
Slope of Grain - 1 in 4.
Splits - equal in length to twice the width of the piece.
Stain - stained sapwood. Firm heart stain or firm red heart.
Unsound Wood - spots or streaks limited to 1/3 the cross section at any point along the length. Must not destroy nailing edge.
Wane - 1/3 the thickness and 1/2 the width full length, or equivalent on each face, provided that wane not exceed 1/2 the thickness and 3/4 the width for up to 1/4 the length.
Warp - 1/2 medium.
White Speck & Honey Comb - firm. |