§ 2-20-18 Grading of other hard woods. In the survey of ash, maple and other hardwood boards, planks, joists andtimber, there are two (2) sorts: The first sort is denominated merchantable andshall include all boards, planks, joists and timber that are sound and freefrom bad knots and free from shakes and rot; the second sort is denominatedrefuse, and shall include all other descriptions, with allowance for rot.