SELLINGLUMBER 437 



long, and the thickness of the stock should be ^-inch less than 

 the rough material. The groove in heavy matchings should be 

 1/16-inch wider than the thickness of the tongue, and 1/16-inch 

 deeper than the length of the tongue. 



Tongue and groove shall be located one-quarter the thick- 

 ness of the rough material from the bottom of the piece. 



In 2-inch and thicker material plowed for splines, the groove 

 should be the same width and depth as is provided for in match- 

 ing material of the same thickness. 



Heavy Shiplap shall be worked to the same thickness as 

 Heavy Flooring. x The lap shall be ^-inch long, occupying one- 

 half the finished thickness of the piece. 



124. Timbers shall be worked to the following: 4x4 and 

 larger S. 1 S. or S. and E. %-inch off each face surfaced; S. 3 

 S. or S. 4 S. %-inch off each face surfaced. 



125. All sizes in Timbers are subject to natural shrinkage. 



SIZE OF YELLOW PINE LATH. 



126. No. 1 Lath should measure 2 inches in thickness to 

 every five lath, green ; the minimum thickness of any one lath 

 shall not be less than 5/16 of an inch, green, and should not be 

 less than 1-7/16 inches in width, green, length 4 feet; \y% inches 

 thickness to every five lath, dry; and should not measure less 

 than 1-5/16 inches in width, dry. Must not be more than 

 ^-inch short in length. 



Lath 1 inch wide and 48 inches long may be furnished 

 when ordered on the above specifications. 



Lath 32 inches long may be furnished when ordered on the 

 above specifications. 



127. No. 2 Lath must be not less than 1% inches in width, 

 %-inch thick when dry, and not more than %-inch short in 

 length. 



128. Byrit Lath to be %x3^2 and 5% inches wide; lengths, 

 4 feet and upward. 



PICKETS. 



129. Square Pickets from IJ^-inch stock shall be worked 

 to 1-5/16x1-5/16, 3 and 4 feet long, dressed on four sides and 

 pointed; 1%-inch stock shall be worked to 1-1/16x1-1/16, 3 and 

 4 feet long, dressed on four sides and pointed. 



