100 



NOMOGRAPHIC SOLUTIONS FOR THE STANDARD CASE 



DB 



80 



75 



t 



3=^.1 »-% 



70 



-65 



-60 



-55 



-50 



45 



-40 



35 



30 



25 



S 



=^300 

 g-250 



=- 200 . 



s^Iso 



g-125 

 =-100 

 -75 



-50 



-25 

 -20 



-15 

 -10 



EXAMPLE SHOWN BY DASHED LINE 



b=o 



DB=57 

 S=150 

 S IN THOUSANDS OF YARDS 



-.2 



-.* 

 =-.S 

 .6 



.8 h-0 



.99 *■ 



20 



Figure 4 



