NHLA Grading Tool

This is an interactive application for wood grading reflecting the NHLA rules. We are showing a board with defects; your goal is to add cuts to yield the necessary cutting units and achieve the desired grade.

  • expected grade:
  • board size:
  • surface measure (SM):
  • min. board size:
  • min. cut size:
  • required cutting units:
  • defect limits:
    defect description value limit valid
id rect. width (in) length (ft) cut units delete

total cutting units: 0