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What is a "Class C" Geotextile?

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JasonG

JasonG

Civil/Environmental
Nov 7, 2002
83
The state stormwater regs specify that geotextile must meet "federal department of transportation requirements for a Class 'C' filter fabric" beneath rip rap and as an interface between layers in infiltration treches. Where can I find the specs for a "Class C" fabric?
 
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