3 



L = 3, 925 ft 

 M = 0. 50 

 c/L = 2. 850 



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7.77 

 5.01 

 1.54 

 0.850 



L = 393 ft 

 M = 0. 05 

 c/L = 28.50 



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L = 39. 3 ft 

 M = 0. 005 

 c/L = 285.0 



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18 



