American Hardwood Lumber Grades

Multiply the sm by the thickness 2 and the bf is 8.

American hardwood lumber grades.

Hardwood lumber grades and grading rules have been established and are governed by the national hardwood lumber association nhla. This guide provides a simplified explanation of the nhla grading system which is the national standard for the u s. Grading rules for american hardwood lumber. The highest grade boards are long wide and free of defects.

Thus the sm is 4. The common grades are likely to be most suitable for the cabinet industry most furniture parts and flooring. The board below is a 2 thick 6 1 4 wide and 8 long. Worldwide hardwood lumber producers grade their lumber assuring downstream consumers of the lumber of the lumber s quality for the intended use.

Alsxc american lumber standard committee incorporated germantown md the alsc site contains general information on the alsc the accreditation programs it adm inisters and contact information for the agencies the alsc accredits. The simplified process of determining hardwood lumber grades. The illustrated guide to american hardwood lumber grades 03 example of sm and bf. Explore the use of the common grades to achieve the most value considering lumber cost and yield.

Respectfully between export grade names of prime and comsel with the nhla grades of fas and no. Put simply lumber grading serves quality assurance needs. Today the nhla has over 2000 members worldwide and the nhla rules are still the national standard for the us hardwood industry and form the basis for grading of export lumber. They were established over 100 years ago by the newly formed national hardwood lumber association nhla.

For complete details the grading rule book can be purchased from the national hardwood lumber association. Non manufactured wood packing nm program. The illustrated guide to american hardwood lumber grades. The nhla grading system which is used by buyers and sellers of hardwood lumber describes the amount of usable clear material in a board.

Hardwood lumber industry and forms the basis for export grading. It is necessary to consult with your supplier as to the exact specifications being applied to these export grade names. Reference untreated wood program. The grading system is based therefore on the measurable percentage of clear wood that is defect free for each of the grades.

Treated wood program. Color sorting in addition to sorting for grades or selecting specific widths various species are commercially sold at an added value.