by Northeastern Forest Experiment Station, Forest Service, U.S. Dept. of Agriculture in Upper Darby, Pa .
Written in English
|Statement||by Edwin L. Lucas.|
|Series||Research paper NE -- 248.|
|The Physical Object|
|Pagination||5 p. ;|
No. 3B Common Boards are 3" and wider, 4' and longer. Yields 25 percent clear face cuttings /2" and wider by 2' and longer. Applications same as No. 3A Common. Source: National Hardwood Lumber Association. We manufacture SYP lumber in dimensions of 2x4 through 2x12 and lengths up to 26 feet. Our long length lumber is available in #1, #2, and #3 grades. For building projects that require long spans such as custom home construction, our extra-long and wide lumber is the preferred choice. No. 1 Common (often called Common or just No. 1) is the standard furniture grade lumber, and provides a good selection of long, medium length, and short cuttings at a reasonable price. No. 2A Common (often just called No. 2 Common) has become the standard grade for cabinets, millwork, and other uses requiring medium to short cuttings. A. 4/4” = 1” (inch) – It is a practice among lumbermen to express the thickness of cabinet grade lumber in quarters of an inch. Hence: 4/4”=1” and so on up to 16/4”=4”. Air-drying (AD) – Wood that has been dried naturally to have moisture content of about 18%. Not a complete drying process! Lumber is piled in alternating layers separated by narrow sticks to permit air.
A storage temperature of between F prevents the cuttings from growing _____ tops A soft wound-healing growth called ______ forms on the basal end of the hardwood cutting. Large wane is over 1/2\" wide on the surface on which it appears, and/ or over one-sixth the length and one-fourth the thickness of the piece. Standard Grades STANDARD GRADES: Selects & Better, No. 1 Common, No. 2 Common, and Peck. For most commercial sales, Selects & Better, then No.2 Common are shipped. Selects & Better Table 2. Summary of the NHLA hardwood lumber grading rules. Adapted from NHLA, Grade Lumber Requirements Min. Board Length (feet) Min. Board Width (inches) Clear cuttings (poor face) Total yield Min. size Max. number FAS (the top grade) 8 6 % 4” x 5’ 3” x 7’ 4* Selects 6 4 % (good face) 1 Common 4 3 % 4” x 2’ 3 File Size: 1MB. The Number 2A Common grade includes boards that are a minimum of 3" wide and 4' long that yield from 50% (6⁄12ths) up to, but not including, the minimum requirement for Number 1 Common (66 2⁄3%). The smallest clear cutting allowed is 3" by 2' and the number of these cuttings depends on the size of the board.
* No. 1 Common (often called Common or just No. 1) is the standard furniture grade lumber, and provides a good selection of long, medium length, and short cuttings at a reasonable price. * No. 2A Common (often just called No. 2 Common) has become the standard grade for cabinets, millwork, and other uses requiring medium to short cuttings. Hardwood Lumber Grading By The NHLA FAS (FIRST AND SECONDS) Provides long, wide, clear cuttings. Best suited for high quality work. Must yield /3% to % clear wood in cuttings at least 3" x 7' or 4" x 5.' SELECT & BETTER Both faces of the board are used in determining this grade. Best face. long wide cuttings. The Common grades, primarily Number 1 Common (No. 1C) and Number 2A Common (No. 2AC), are likely to be most suitable for the kitchen cabinet industry, most furniture parts, and plank and strip flooring. Worth noting is the fact that once re-sawn, the cuttings obtained from the Common grades willFile Size: KB. clear cuttings must be at least 3” wide by 3’ long or 4” wide by 2’ long. #2a Common This grade includes material that can yield from 50% up to 66 % of clear wood cuttings. These clear cuttings must be at least 3” wide by 2’ long. Wane Limitations in Lumber Grades FAS/1F • /Better Face: the length of the board maximum.