w 



?'/2 L 3" 3" 3", ZV zj 



xnv^ 



16" SQ. 



1930 PILE-UPPER 17' 



1930 PILE-BELOW 17' 



Figure 20. Cross-section view of 

 1930 piles, Pier J/K. 



Visual 

 Inspection 



Ultrasonic Testing 



• General Condition 

 Assessment 



• Crack Detection 



1/32" 



Pile Cleaning System 



• Water Jet 



• Mechanical 



• Hydraulic Power Source 



Schmidt Hammer 



• Surface Hardness 



• General Condition 

 Assessment 



If ;[ I 



Data Display and 

 Analysis 



Concrete Coring 

 Tools 



REBAR Location 

 Concrete Cover (1 /4-8") 

 REBAR Size(#3-#16) 



r 



REBAR 

 Corrosion 

 Detection 



Figure 21. Integrated Systems Approach to Underwater Concrete 

 Inspection. 



48 



