View Single Post
  #4 (permalink)  
Old 12-07-2012, 05:38 PM
razerwire razerwire is offline
CC Member
Visit my Photo Gallery

 
Join Date: Sep 2008
Cobra Make, Engine: csx4163 full comp alu. body
Posts: 368
Not Ranked     
Default

Don't know about mm but 5 1/2 inches thick is recommended with no cracks in concrete within 3 or 4 feet of where posts will go. Shim level and bolt down. I leaned post out 1/2 inch at top on my install, just because.
Reply With Quote