[USCC] typical compost density

[Crowley, Patrick]

Karen:

The bulk density of straw is about 200 lbs/cu. yd.  And the manure is
about 1500 lbs/ cu. yd..  The mixture depends on the ratio of materials
in the bin.  I would like to see the process when you get it up and
running.

F. Patrick Crowley
Project Manager
Waste Management Section
Montana Department of Environmental Quality
P.O. Box 200901
Helena, MT 59620
Phone 406-444-5294
Fax 406-444-1374
Email pcrowley at mt.gov  

-----Original Message-----
From: compost-bounces at mailman.cloudnet.com
[mailto:compost-bounces at mailman.cloudnet.com] On Behalf Of Hoffman,
Karen - Bozeman, MT
Sent: Tuesday, June 19, 2007 2:30 PM
To: compost at mailman.cloudnet.com
Subject: [USCC] typical compost density

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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
 
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