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Jimbabwe · 08-18-2011, 12:10 PM

I would make 6" and trowel contraction joints every 12-15 feet. Concrete will crack, it's about controlling where it does. Placing it in 2 pours would be best in a
checkered pattern.
Planning on putting a gravel layer down as a vapor barrier too?

08-18-2011, 12:10 PM	#36
Jimbabwe Drives: 2010 IBM 2SS/RS Join Date: Apr 2010 Location: Elk Grove California Posts: 310	I would make 6" and trowel contraction joints every 12-15 feet. Concrete will crack, it's about controlling where it does. Placing it in 2 pours would be best in a checkered pattern. Planning on putting a gravel layer down as a vapor barrier too?