APPENDIX 



COLUMBIA RIVER L(3G SCALING AND GRADING BUREAU LOG 

 GRADING RULES FOR DOUGLAS FIR 



No. 1 Logs. 



No. 1 logs shall be logs which, in the judgment of the scaler, will be suitable 

 for the manufacture of lumber in the grades of No. 2 clear or better to an amount 

 of not less than 50 per cent of the scaled contents. 



No. 1 logs shall contain not less than six annual rings to the inch in the 

 outer portion of the log equal to one-half of the log content; and No. 1 logs shall 

 be straight grained to the extent of a variation of not more than 2 inches to 

 the lineal foot for a space of 6 lineal feet equidistant from each end of the log. 



Rings, rot, or any defect that may be eliminated in the scale, are permitted 

 in a No. 1 log providing their size and location do not prevent the log pro- 

 ducing the required amount of No. 2 clear or better lumber. 



A No. 1 log may contain a few small knots or well scattered pitch pockets 

 as permitted in grades of No. 2 clear or better lumber; or may contain a very 

 few grade defects so located that they do not prevent the production of the 

 required amount of clear lumber. 



No. 2 Logs. 



No. 2 logs shall not be less than 12 feet in length, having defects which 

 prevent their grading No. 1, but which, in the judgment of the scaler, will be 

 suitable for the manufacture of lumber principally in the grades of No. 1 

 common or better. 



No. 3 Logs. 



No. 3 logs shall be not less than 12 feet in length, having defects which 

 prevent their grading No. 2 but which, in the judgment of the scaler, will be 

 suitable for the manufacture of inferior grades of lumber. 



Cull Logs. 



Cull logs shall be any logs which do not contain 33^ per cent of sound lumber. 



