At =15° F 



.(FEET) 



- 150 



- 140 



- 130 



- 120 

 -110 



- 100 



- 90 



- 80 



- 70 



- 60 

















































































































































































































































































- 





s' 





rgence^ 







A e<^ 

















: 



/ 



/ 



/ 











(QJ>^^ 

















- 



/ 

 / 





"V> ,— 



-^S 























- 



/ 



/ / 



/ / 



/ y 



*<«!-■ 



ence)^. 





3--' — 









- s "=^ 









- 



1 1/ 



1 A ! 



/ s> 

 IS 







-ni^lS 



encej^- 



















- 



1// /i 



\l\n 





























.2 0.4 0.6 0.8 1.0 1.2 1.4 I 



k 



6 1.8 2.0 2.2 2 4 2.6 



FIGURE 21 PARAMETERS v AND h VERSUS k FOR STABILITY INDEX At = 14° TO 16° F 



1*3 



