40 BULLETI]Sr 426_, U. S. DEPARTMENT OF AGEICULTUEE. 



GRADES. 



Sugar pine lumber is classified into the following grades: 



Thick finish: - 



No. 1 and 2 clear. 1, 1}, 1^, 2 inch widths. 



No. 3 clear. Same dimensions; must contain 70 per cent No. 1 door cuttings of 



No. 1 shop common sizes. 

 C select. Same dimensions, one face finished; admits small defects. 

 D select. Same as C select, except admits more serious defects. 

 Siding: 



1 and 2 grade (B and better). Thickness |: inch. 

 No. 3 siding. Thickness h inch; admits greater defects than 1 and 2. 

 Factory plank or shop common, graded for door cuttings: 



No. 1 shop common. From 50 to 70 per cent No. 1 cuttings. 



No. 2 shop common. Either 25 per cent No. 1 door cuttings or 40 i^cr cent No. 1 



and 2 combined, or 50 per cent No. 2. 

 No. 3 shop common. IJ inch and thicker; not less than 121 per cent No. 1 and 2 



sash and door cuttings. 

 Inch shop common. Must contain 50 per cent above described cuttings; cuttings 



must be 10 inches wide or wider, 22 inches long or longer; or, 8 inches wide or 



wider and 3 feet long or longer. 

 No. 1 fencing D and M. Sound No. 1 fencing worked to flooring; when worked 



should be of character of No. 1 common strips. 

 No. 2 fencing D and M. No. 2 fencing worked to flooring of character No. 2 



common strips. 

 No. 3 fencing D and M. No. 3 fencing worked to flooring; some coarse knots, 



split and wane. 

 Common lumber; 1 inch thickness: 



No. 1 common boards and strips. Sound, tight-knotted stock, free from large, 



coarse knots. 

 No. 2 common. Admits coarser and larger knots and more stained sap. 

 No. 3 common. Admits large, loose, unsound knots; shake, red rot, blue sap 



stain. 

 Thick common lumber, 1^ inches thick and thicker: 



Tank stock. Dimension sizes, free from wane; sound knots and white sap ad- 

 mitted. 

 Step plank. 8 inches wide or wider; graded the same as No. 1 common boards. 



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