Milling Striation Patterns

THE FOLLOWING PICTURES ARE EXAMPLES OF THE STRIATION PATTERNS SPECIFIED IN SECTION 327.

The Department will accept a milled surface having a striation pattern that does not show the chevron or diagonal striation effect. The striation grooves shall be continuous longitudinal lines and shall not have any diagonal patterns present.



ACCEPTABLE STRIATION PATTERN - grooves are continuous longitudinal lines and no diagonal patterns are present.

 

Green Line 1                            

 

 

Green Line 2












                          

 

UNACCEPTABLE STRIATION PATTERN -  grooves are not continuous longitudinal lines and diagonal or chevron patterns are present.

 

Pattern 1		 Pattern2
  
 3 Lines
Pattern 4
  
  

COMPARISION EXAMPLE -  Picture compares acceptable and unacceptable striations.

 
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