3296 



Chapter 27 



PREDICTED YIELD OF I -INCH wide 



CUTTINGS - FAS 



M 148 576 

 Figure 27-1 4A. — FAS-predicted yield of 1 -inch-wide cuttings when lumber is processed 

 by gang ripping first. (Drawing after Hallock 1980.) 



surface measure of each of the cuttings in column 3. The measure is calculated 

 by multiplying the length and width in inches by the number of pieces and 

 dividing by 144. For example, 



60 X 3.5 X 100 



144 



145.8 



It is useful for the crosscut operation to know the actual number of ripped strip 

 pieces of each given length that are required to yield the required cuttings of each 

 length and width. Usually the rip width will differ from the cutting width so the 

 number of pieces required will also differ. To calculate the number of pieces, the 

 number of cuttings is multiplied by a factor obtained by dividing the cutting 

 width by the rip width. For example: 



— X 100 = 233.3 pieces 



for the 60-inch cuttings. Since an extra piece is required to yield the 0.3, the 

 actual requirement is 234 pieces. 



