Table 2. R-Meter Readings from Test Blocks in Inches 

 of Concrete Cover Before Modification and 

 After Modification with the Probe 

 Submerged in Water 



Test 

 Block 



Position 



Rebar 

 Size 



R-Meter Readings 

 (inches) 



Difference 

 (in.) 



Before 

 Mod. 



After Mod. 

 (submerged) 



A 

 B 

 C 

 D 



1 

 2 

 3 



4 



1 

 2 

 3 

 4 



1 

 2 

 3 

 4 



1 

 2 

 3 



4 



No. 3 

 No. 4 

 No. 6 

 No. 7 



1-7/8 

 1-3/4 

 3-1/4 

 3-1/8 



1-7/8 

 2-1/8 

 3-3/8 

 3-3/4 



1-3/4 

 2-1/8 

 3-5/8 

 3-3/4 



1-1/4 

 1-5/8 

 3-3/4 

 3-7/8 



1-7/8 

 1-3/4 

 3-1/4 

 3-3/16 



1-7/8 

 2-1/8 

 3-1/2 

 3-7/8 



1-3/4 

 2-1/8 

 3-3/4 

 3-7/8 



1-1/4 

 1-3/4 

 3-3/4 

 4 



+ 1/16 



+ 1/8 

 +1/8 



+ 1/8 

 + 1/8 



+ 1/8 

 + 1/8 



24 



