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   You are here: Home / Technical Information / Hole Patterns
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Top of Box
Right Pointer Hole Patterns
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Camber Example

Camber Example
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Right Pointer Formulas for Determining Percentage of Open Areas
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To Find the Holes Per Square Inch

% Open Area
 = H.P.S.I
White Rule
78.54 X D2

 
ole Formula
D2 X 90.69
 = %
White Rule
C2
 
Hole Formula
D2 X 78.54
 = %
White Rule
C2
 
Hole Formula
S2 X 100
 = %
White Rule
C2
 
Hole Formula
L X W
 X 100 = %
White Rule
C2
 
Hole Formula
157.08 D2
  = %
White Rule
S2
 
Hole Formula
100 X D2
  = %
White Rule
C2
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