NHLA Rules Book 2015

Page 65

63 Note: Pieces below the grade of No. 1 Common shall be graded according to the rules for Poplar and specified as No. 2A Common, No. 2B Common and No. 3 Common Quartered Poplar.

Plain Sawn Bending Oak Bending Oak, unless otherwise specified, will include both Red and White Oak and shall be cut from live timber. The grain shall not diverge more than 1" in 15", except for short deviations occasioned by admissible defects. There shall be not more than fifteen annual rings per inch. Green lumber 1-1/4" and thicker shall be sawn 1/8" thicker than specified thickness except that 10% 1/16" thicker will be admitted. Stain, bird pecks, spot and pin worm holes scattered or in clusters not less than 6" apart with not more than three worm holes to the cluster are not considered defects. Widths: 5" and wider. Lengths: 6' to 16'. Pieces 5" wide and pieces 6' and 7' long shall be clear except as stated above. In pieces 6" and wider, 8' and longer the following in addition to those mentioned above shall not be considered defects: Six inches of split in one end, or its aggregate equivalent in both ends. Wane along the edges not exceeding in the aggregate one-sixth the length and not over one-half the thickness of the piece and not exceeding 1/2" in width in 1/2" to 3/4" lumber; 3/4" in width in 1" to 2" lumber and 1" in 2-1/2" and thicker lumber, or its equivalent in area at one or both ends. Standard defects or their equivalent will be admitted according to surface measure of the piece as follows: • 5' to 7', one; 8' to 11', two; 12' to 15', three; 16' to 19', four; 20' and over, five. Splits in excess of the equivalent of two standard defects shall not be admitted. • In any series of special widths sold 10" on or wider, splits in excess of the equivalent of one standard defect shall not be admitted. • Unless otherwise specified, 1/2" side bend in pieces 8' and 9' long, 3/4" in pieces 10' to 12' long and 1-1/4" in pieces 13' to 16' long, shall not be considered a defect. Each additional 1/2" of side bend in all lengths shall be considered one standard defect, except that not more than two such defects shall be allowed in any piece.


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