SELLING LUMBER 447 



Southern Yellow Pine Car Material 

 Specifications 



Recommended Practice of the Master Car Builders' 



Association, and American Railway Master 



Mechanics' Association 



Adopted and Reprinted by the Southern Pine Association, New Orleans, La. 

 January, 1, 1916 



CLASSIFICATION, GRADING AND DRESSING RULES 

 FOR SOUTHERN YELLOW PINE CAR MATERIAL. 



1. Classification, Grading and Dressing Rules for South- 

 ern Yellow Pine Car Lumber, adopted as recommended prac- 

 tice by the Master Car Builders and American Railway Master 

 Mechanics' Associations, Atlantic City, June 15-22, 1910; adopt- 

 ed at Chicago, 111., by the Yellow Pine Manufacturers' Associa- 

 tion, July 19 and 20, 1910; and adopted and ordered reprinted 

 by the Grading Committee of the Southern Pine Association, 

 November 23, 1915. 



2. SOUTHERN YELLOW PINE LUMBER to cover 

 long leaf and short leaf Yellow Pine grown in the Southern 

 States shall be graded and classified according to the following 

 rules and specifications as to quality, and dressed stock shall 

 conform to the subjoined table of standard sizes, except where 

 otherwise expressly stipulated between buyer and seller. 



3. Recognized defects in Southern. Yellow Pine are knots, 

 knot holes, splits (either from seasoning, ring hearts or rough 

 handling), shake, wane, red heart, pith, rot, rotten streaks, dote, 

 worm holes, pitch streaks, pitch pockets, torn grain, loosened 

 grain, seasoning or kiln checks, sap stains and imperfect manu- 

 facture. 



KNOTS. 



4. Knots shall be classified as pin, standard and large, as 

 to size ; and round and spike, as to form ; and as sound, loose, 

 encased, pith and unsound, as to quality. 



5. A pin knot is sound and not over ^-inch in diameter. 

 (See page 448). 



