438 



2R \2R 



O .00125 

 0.0015 

 0.0020 

 0.0025 

 0.0030 

 9.0035 

 0.0040 

 0.0045 

 0.005 

 0.OO6 

 0.007 

 0.OO8 

 0.009 

 0.010 

 0.0125 

 0.015 

 0.0175 

 9.020 

 0.0225 

 0.025 

 0.0275 

 0.030 



Critical Buckling Pressure 

 P (p.s.i.) 

 2.0 2.5 3.0 3.5 4.0 5 



14 



