Solid Wood Products 



268: 



ABSOLUTE SWEEP SMALL 



DIAMETER 



MAXIMUM ABSOLUTE SWEEP PERMITTED: 1/2 SMALL DIAMETER 



EXAMPLE: 



SMALL DIAMETER 

 18 INCHES 

 12 INCHES 

 6 INCHES 



MAXIMUM ABSOLUTE SWEEP 

 9 INCHES 

 6 INCHES 

 3 INCHES 



MORE THAN 1 SPLIT FACE 



TWO OF THREE MEASUREMENTS 

 "A", "B", OR "C" MUST 

 EQUAL 1 INCH PER FOOT OF 

 LENGTH: 4-1/2-INCH MINIMUM 



1 SPLIT FACE 



MEASUREMENT "A" MUST EQUAL 

 1 INCH PER FOOT OF LENGTH: 

 4-1/2-INCH MINIMUM 



Figure 22-62. — (Top) Maximum sweep in roundwood for sown mine timbers. (Bottom) 

 Split mine-prop measure. (Drawings after Timson 1978b.) 



