A Simplified Procedure for Developing Grade Lumber From ...

United StatesDepartment ofAgricultureForest ServiceForestProductsLaboratoryResearchNoteFPL−RN−098A Simplified Procedurefor Developing GradeLumber FromHardwood LogsF. B. Malcolm

AbstractThis paper describes grade sawing procedures for improvinglumber grade yield recovery from hardwood factory logs.Basic principles of hardwood lumber grades are applied tosimplified sawing procedures to accomplish improved graderecovery. Discussion includes positioning surface defects inrelation to opening faces. Special consideration is given todefects such as seams, end splits, and rot as well as sawingsweepy logs. While the head sawyer duties are the primaryfocus of this paper, edging and trimming considerations arealso covered.Keywords: grade lumber, hardwood, sawing,yield recoveryThis Research Note was originally issued in 1956 under the same title asForest Products Laboratory Report No. 2056 and last reprinted in 1965 asFPL–RN–098.Reviewed, updated, and approved for reprinting by John R. Drumm, ForestProducts Technologist, U.S. Department of Agriculture, Forest Service,Forest Products Laboratory, Madison, WI.October 2000 (Revised)Malcolm, F.B. 2000. A simplified procedure for developing grade lumberfrom hardwood logs. Res. Note FPL–RN–098. Madison, WI: U.S. Departmentof Agriculture, Forest Service, Forest Products Laboratory. 13 p.A limited number of free copies of this publication are available to the publicfrom the Forest Products Laboratory, One Gifford Pinchot Drive, Madison,WI 53705–2398. Laboratory publications are sent to hundreds of librariesin the United States and elsewhere.The Forest Products Laboratory is maintained in cooperation with the Universityof Wisconsin.The United States Department of Agriculture (USDA) prohibits discriminationin all its programs and activities on the basis of race, color, nationalorigin, sex, religion, age, disability, political beliefs, sexual orientation, ormarital or familial status. (Not all prohibited bases apply to all programs.)Persons with disabilities who require alternative means for communicationof program information (Braille, large print, audiotape, etc.) should contactthe USDA’s TARGET Center at (202) 720–2600 (voice and TDD). To file acomplaint of discrimination, write USDA, Director, Office of Civil Rights,Room 326-W, Whitten Building, 1400 Independence Avenue, SW, Washington,DC 20250–9410, or call (202) 720–5964 (voice and TDD). USDA isan equal opportunity provider and employer.

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