Grade Rule Terminology3

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Across
  1. 1. The arrangement of the growth rings in an irregular, circular appearance.
  2. 3. When the annul growth rings make an angle of less than 45° with the wide surface of the piece. Face characteristic is typically steeple like.
  3. 5. A bluish or grayish discoloration of the sapwood caused by the growth of certain dark colored fungi.
  4. 7. A well-defined accumulation of pitch in a more or less regular streak in the wood.
  5. 11. A growth that may distort the grain pattern and appear non-symmetrical.
  6. 12. Dart A well-defined accumulation of pitch in a more or less regular streak in the wood, typically short in length and scattered.
Down
  1. 2. A surface condition exhibiting one or more of the following traits: fish scales, feathered or lifted, loose fiber.
  2. 4. A small round hole, (approx. 1/16” diam.) appearing randomly in a piece of wood that may have a dark edge at the perimeter.
  3. 6. A knot that is no more than 1/8” in diameter. Can be in dime size clusters.
  4. 8. A discoloration of the wood that is usually caused by micro-organisms or metals.
  5. 9. The distortion of lumber in a direction perpendicular to an edge, from a straight line from end-to-end of the piece.
  6. 10. An opening between annual growth rings that contains bark.