SELLING LUMBER 445 



large knots or other defects that will materially injure their 

 strength. 



Longitudinal X Braces, Sash and Sway Braces. 



8. Longitudinal X Braces, Sash Braces and Sway Braces 

 shall be square cornered and sound ; shall show not less than 

 80 per cent heart on each of the two sides, and shall be free 

 from any large knots or other defects that will materially in- 

 jure their strength. 



Ties and Guard Rails. 



9. Ties and Guard Rails shall show one side all heart; the 

 other side and two edges shall show not less than 75 per cent 

 heart, measured across the surface anywhere in the length of 

 the piece; shall be free from any large knots or other defects 

 that will materially injure their strength, and where surfaced 

 the remaining rough face shall show all heart. 



STANDARD GRADE, DENSE AND .SOUND YELLOW 



PINE. 



Stringers. 



10. Stringers shall be square cornered, with the exception 

 of 1-inch wane on one corner or ^2-inch wane on two corners. 

 Knots shall not exceed in their largest diameter one-fourth of 

 the width of the surface of the stick in which they occur, and 

 shall in no case exceed 4 inches. Ring shakes shall not extend 

 over one-eighth of the length of the piece. 



Caps and Sills. 



11. Caps and Sills 'shall be square cornered, with the ex- 

 ception of 1-inch wane on one corner, or J/2-inch wane on two 

 corners. Knots shall not exceed in their largest diameter one- 

 fourth of the width of the surface of the stick in which they 

 occur, and in no case shall exceed 4 inches. Ring shakes shall 

 not extend over one-eighth of the length of the piece. 



Posts. 



12. Posts shall be square cornered, with the exception of 

 1-inch wane on one corner, or ^-inch wane on two corners. 

 Knots shall not exceed, in their largest diameter, one-fourth 

 of the width of the surface of the stick in which they occur, 

 and shall in no case exceed 4 inches. Ring shakes shall not 

 extend over one-eighth of the length of the piece. 



