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The Basics of Hardwood Lumber Grading
Автор: Kelsey Egelhoff
Загружено: 2013-01-22
Просмотров: 6444
Описание: Today, NHLA grading rules are not only the dominant grading system for hardwood lumber in the United States, but also form the basis for much of the international trade in hardwoods. There are eight hardwood lumber grades in widespread use today. FAS is the highest and No. 3B Common is the lowest. In short, the higher grades of lumber have more large clear area than the lower grades. The basic concept of grading is that the grade of all lumber is determined from the poorest face or side of the lumber, with a few cases considering the better face as well.
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