SELLINGLUMBER 429 



provided the grade of such thin stock is otherwise as good as 

 No. 1 Common. 



No. 3 COMMON BOARDS. 



81. No. 3 COMMON BOARDS, No. 3 COMMON SHIP- 

 LAP, D. & M. AND BARN SIDING is defective lumber, and 

 will admit of coarse knots, knot holes, very wormy pieces, red 

 rot and other defects that will not prevent its use as a whole 

 for cheap sheathing, or which will cut 75 per cent of lumber 

 as sound as No. 2 Common. 



No. 4 COMMON BOARDS. 



82. No. 4. COMMON BOARDS shall include all pieces 

 that fall below the grade of No. 3 common, excluding such 

 pieces as will not be held in place by nailing, after wasting 

 one-fourth the length of the piece by cutting into two or three 

 pieces ; mill inspection to be final. 



FENCING. 

 3, 4, 5 AND 6 INCHES WIDE. 



Sizes. One-inch S. 1 S. or 2 S. to 13/16, 1^-inch S. 1 S. 

 or 2 S. to 1-1/16, 1^-inch S. 1 S. or 2 S. to 1-5/16. These 

 thicknesses also apply when S. 4 S. 



When 4 and 6-inch Fencing is S. 2 S. and C. M., the fin- 

 ished thickness shall be ^-inch and inspected under flooring 

 rules. 



Widths. On stock widths of 3, 4, 5 and 6-inch No. 1 Com- 

 mon, no piece shall be counted as standard width that is more 

 than ^4-inch scant in width. Pieces narrower than this should 

 be measured as the next lower standard width and not reduced 

 in grade. 



Grades : No. I, No. 2, No. 3 and No. 4 Common. 



No. 1 FENCING. 



83. No. 1 FENCING shall admit of the following defects 

 or their equivalent : Sound knots, the mean or average diameter 

 of any one knot shall not be more than 2 inches in 5 and 6-inch 

 stock, nor more than \y 2 inches in 3 and 4-inch stock, three 

 pith knots, wane ^2-inch deep on edge, not exceeding 1 inch 

 wide one-third the length of the piece ; torn grain, pitch, pitch 

 pockets, sap stain, seasoning checks, slight shake, firm red 



