OCI Calculations
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The Weight, or relative importance of an Index, is stored in the Condition Category library. The OCI is the result of dividing the sum of the weighted condition category indexes by the sum of the weights used.
Condition Category 
Weight 
Inspection Index 
Result 

Aesthetics 
2 x 
40 
80 
Structures 
5 x 
60 
300 
Surface 
3 x 
40 
120 




Weighted Sum Total 
10 
Results Total 
500/10 
OCI = 
500/10 
Total OCI is 
50 
Use higher Weight values to increase the relative importance of a Condition Category when calculating OCI. Use lower Weight values to decrease the relative importance of a Condition Category when calculating OCI.
Null or zero values in Index or Weight have special effects on OCI.
If the Index is 
If the Weight is 
Effect on OCI 

NI(Not inspected) 
a number 
Estimated index for Condition Category used to calculate OCI. If unavailable estimate, Condition Category is not used to calculate OCI. 
0 
a number 
Index of 0 used to calculated OCI 
a number 
NULL 
Condition Category not used to calculate OCI 
a number 
0 
Condition Category not used to calculate OCI 
Once the OCI is calculated, the value is used to look up the corresponding Overall Condition Rating (OCR) stored in the Condition Categories Ratings library.