ASH, BIRCH, MAPLE AND POPLAR: ROTARY-CUT, QUARTER CUT, PLAIN SLICED (From Table 3.1©)

ASH, BIRCH, MAPLE AND POPLAR: ROTARY-CUT, QUARTER CUT, PLAIN SLICED (From Table 3.1©)

ASH, BIRCH, MAPLE AND POPLAR: ROTARY-CUT, QUARTER CUT, PLAIN SLICED (From Table 3.1©)
Natural Characteristics A Grade B Grade C Grade
Small Conspicuous Burls & Pin Knots – Comb. Avg. Number 10 per 4 x 8′ panel 16 per 4 x 8′ panel No limit
Conspicuous Burls – Max. Size 3/8″ 1/2″ No limit
Conspicuous Pin KnotsAverage NumberMax. Size: Dark PartMax. Size: Total 1 per 8 sq ft4 per 4 x 8′ panel1/8″1/4″ 1 per 4 sq ft8 per 4 x 8′ panel1/8″1/4″ No limit
Scattered Sound and Repaired KnotsComb. Average NumberMax. Size – SoundMax. Size – RepairedAvg. Number – Repaired No 1 per 8 sq ft4 per 4 x 8′ panel3/8″1/8″1 per 8 sq ft 1 per 4 sq ft8 per 4 x 8′ panel1/2″1/2″1 per 8 sq ft
Mineral Streaks Slight Slight Yes
Bark Pockets No Few to 1/8″ x 1″ Few to 1/4″ x 2″
Worm Tracks Slight Slight; Ash Yes Yes
Vine Marks Slight Slight Yes
Cross Bars Slight Yes Yes
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