The table below provides the maximum amount of decay allowed in each grade. Click on the image to the right as a refresher on identifying Decay in a board (Click on the image to enlarge, then click anywhere outside the image to return to the course page). View the video for a demonstration on measuring decay in a board.
|C Select||Not Permitted within Grade|
|D Select||Not Permitted within Grade|
|Finish||Not Permitted within Grade|
|Premium||5%||10%||Not Permitted within Grade|
|Industrial||Not Limited by Grade||50% of surface area|