D * 





















D K5 



E 



U 1 





















fl o . 



T 8.9 

 I 





















H % 



1 2 



3 



4 



5 



6 



7 



8 



9 



ie i 



T 8.5- 



RX POSITION 



(a) Pile 5, quadrant 2, 



- 









— t Jf''' ^ 



r" 



1 



2 



3 



4 



5 6 7 8 9 18 11 



RX POSITION 



(b) Pile 5, quadrant 3. 



Figure 18. Ultrasonic field tests: standard deviation (100 usee) 

 versus position of receiver (RX) for Pile No. 5. 



5 6 

 RX POSITION 



(a) Pile 1, quadrant 2. 



RX POSITION 



(b) Support pile, quadrant 2, 







Figure 19. Ultrasonic field tests: standard deviation (100 usee) 

 versus position of receiver (RX) . 



34 



