SELLING LUMBER 421 



48. "B" FLAT FLOORING will admit any two of the 



following or their equivalent of combined defects : Fifteen 

 per cent sap stain, 15 per cent firm red heart, three pin knots, 

 one standard knot, three small pitch pockets, one standard pitch 

 pocket, one standard pitch streak, slight torn grain, small sea- 

 soning checks, six pin worm holes. 



49. "C" FLAT FLOORING will admit any two of the 

 following defects or their equivalent of combined defects: 

 Twenty-five per ceVit of sap stain, 25 per cent of firm red heart, 

 two standard pitch streaks, medium torn grain, or other ma- 

 chine defects that will lay without waste; slight shake that 

 does not go through, or seasoning checks that do not show 

 an opening through, two standard pitch pockets, six small pitch 

 pockets, two standard knots or six pin knots, twelve pin worm 

 holes. 



50. EDGE GRAIN FLOORING shall take the same in- 

 spection as Flat Grain, except as to the angle of the grain. (See 

 Sec. 33). 



51. HEART FACE EDGE GRAIN shall be free from 

 sap on face side. 



52. "D" FLAT FLOORING will admit the following 

 defects or their equivalent of combined defects : Sound knots 

 not over one-half the cross section of the piece in the rough at 

 any one point throughout its length ; three pith knots, pitch, 

 pitch pockets, sap stain, firm red heart, seasoning checks that 

 do not show an opening through, shake that does not go through, 

 a limited number of pin worm holes well scattered, loosened or 

 heavy torn grain, or other machine defects that will lay with- 

 out waste. 



Pieces otherwise as good as "B" Flooring may have one de- 

 fect (like a knot hole) that can be cut out by wasting \]/2 

 inches of the length of the piece, provided both pieces are 16 

 inches or over in length after cutting out such defects. 



53. No. 1 COMMON FLOORING is the combined grade 

 of C and D Flooring, and will admit all pieces that will not 

 grade "B," and are better than No. 2 Common. 



54. No. 2 COMMON FLOORING admits all pieces that 

 will not grade as good as "D" Flooring that can be used for 

 cheap floors without a waste of more than one-fourth the length 

 of any one piece. (See Sec. 26). 



