This is going to depend a lot on the moisture content.
You can determine the density yourself for an investment of about $7.50.
Wally World sporting goods department sells a fish scale that will weigh 0-50lb. for about $5.
Either Homer Depot or Lowes will sell you a 5-gallon bucket for ~ $2.50.
Take a shovel, the bucket and the scale with you. Fill the bucket with manure and weigh it with the scale. There are 7.48 gallons to the cubic foot, so the weight of the bucket of manure will be 2/3 the density in lbs/cubic foot.
According to my bathroom scales the 5 gallon bucket filled with the horse manure weighed 26 lbs. If my math is correct (questionable) and the 5 gallon bucket is 2/3 of a cubic foot then a cubic foot should weigh 39 lbs. Since my trailers capacity is 156 cubic feet loaded up to the 2' level that would compute to 6084 lbs loaded to capacity. Does that sound correct? Dang I was overloaded!!! Even at a 1/2 load I would be over 3000 lbs. I really should only get a 1/3 load in my trailer if these computations are correct. 2' height divided by 3 would be a .67' or only 8 inches fill height in my trailer?? Can that method be correct as that would make the manure 1053 pounds per cubic yard?? Does manure weigh over 1000 pounds per yard??
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