Table 9. Continued 

 (b) Overall Sound Velocity (fps) Data 



Pile 

 Group 



No. 



of 



Piles 



Sound Velocity (ft/sec) — 



Avg 



S.D. 



Minimum 



Maximum 



Difference 



% 



1930, 

 Bents 8&9 

 1930, 

 Bent 10 



1958 



Pile Caps 

 (Dry) 



7 

 11 



7 

 6 



15,015 

 14,925 



15,635 

 13,413 



633 

 384 



265 

 640 



14,035 

 14,560 



15,150 

 12,240 



15,750 

 15,565 



15,745 

 14,150 



1,715 

 1,005 



595 

 1,910 



11.4 

 6.7 



3.9 



14.0 



30 



