TABLE XIII 



Test Specimen Rating Systems for Tables Ila, lib, and VIII 



Table No. 



Rating System 



Ila and lib Ratings are based on ASTM Photographic Reference 



Standards (ASTM Designation: D6IO-U3) for evaluating 

 the degree of resistance to rusting obtained with 

 coatings on steel surfaces. 



VIII 



Excellent - Coating in essentially the same condition 

 as when first placed in service. 



Good 



- Coating has very minor deterioration. 



Fair - A significant amount of coating deteri- 

 oration and/or rusting, but still in 

 serviceable condition. 



Poor 



Coating deterioration and rusting serious 

 enough to lead to an early removal from 

 service. 



From Alumbaugh (1962); Drisko (1965) 



A-17 



