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Grade Rules Writing Organizations

The accredited agencies in the lumber program operate under one or more of the following six sets of grading rules and are available from the publishing agency.  Please contact them for information concerning their respective rules.

1. Standard Grading Rules for Northeastern Lumber; published by the Northeast Lumber Manufacturers Association (NeLMA), 272 Tuttle Road, P.O. Box 87A, Cumberland Center, ME 04021; 207.829.6901; 207.829.4293 (fax); e-mail

2. Standard Specifications for Grades of California Redwood Lumber; published by the Redwood Inspection Service (RIS), 1500 SW First Avenue, Portland Oregon 97204-2122; 503.224.3930; 503.224.3934 (fax); e-mail

3. Standard Grading Rules for Southern Pine; published by the Southern Pine Inspection Bureau (SPIB), 4555 Spanish Trail, Pensacola, FL 32504;  850.434.2611;   850.434.1290 (fax); e-mail

4. Standard Grading Rules for West Coast Lumber; published by the Pacific Lumber Inspection Bureau (PLIB/WCLIB); 1010 South 336th Street, Suite 210, Federal Way, WA  98003;   253.835.3344;   253.835.3371 (fax);  e-mail

5. Western Lumber Grading Rules; published by Western Wood Products Association (WWPA); 1500 SW First Avenue, Portland Oregon 97204-2122; 503.224.3930; 503.224.3934 (fax); e-mail

6. Standard Grading Rules for Canadian Lumber; published by the National Lumber Grades Authority (NLGA); Suite 303 - 409 Granville St., Vancouver, BC V6C 1T2; 604.673.9100; 604.673.9141; e-mail


Accredited Agency List
Grading Rules
Enforcement Regs.
Foreign Lbr. Policy
Glued Lbr. Policy
Machine Graded
Spans for Decking
Addt'l Documents
PS 20

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