TELEPHONE LINE WIRE SPACING PROBLEMS 



209 



60,000 



40,000 

 30,000 



20,000 



10,000 

 8000 

 6000 



4000 

 3000 



2000 



(rtlOOO 

 Q 



g 800 



a. 



liJ 600 



a 



y- 400 



? 300 



2 



26 31 36 41 46 51 



TO TO TO TO TO TO 



30 35 40 45 50 55 



ND VELOCITY IN MILES PER 



Fig. 9- 



-Distribution of the annual maximum and five-minute average 

 wind velocities. 



