[USCC] typical compost density

[Hoffman, Karen - Bozeman, MT]

I am planning a bin system for composting cattle manure with a chopped
straw amendment.  We planning a mix that will achieve a C:N ratio of 35
and moisture content of 60%.  I am wondering if anyone has data
regarding what the density of this mix of material will be the first
bin?  The bins are 12 ft wide by 8 ft high.  
 
The bin system we plan to use involves aerating with forced air and
moving the material from one bin to the next every 2 weeks.  The
material will be held in the bin system a total of 12 weeks (est. 1
month active composting and 2 months curing).  What would I expect the
density to be at the end of this 12 week process?
 
 
_________________________________________
Karen Hoffman, Civil Engineer
Natural Resources Conservation Service
Federal Building, Room 443
10 E. Babcock Street
Bozeman, MT  59715
karen.hoffman at mt.usda.gov
Phone: (406) 587-6824
Fax: (406) 587-6761