How to Calculate Bale Density
Most codes require specific measurements for the density of a construction-grade bale. The code I work with calls for a bale density of at least 7 pounds per cubic foot of material.
The bales I use measure 18" wide x 14" tall x 45" long and weigh roughly 50 pounds. Many bales measure 18" x 14" x 36" and weigh between 40 and 45 pounds.
These numbers are for two-string bales.
To calculate the density of the bales I use, follow the formula below: Multiply 18*14*45 = 11,340 cubic inchesDivide 11,340/1728 = 6.5625 cubic feetDivide 50 pounds by 6.5625 cubic feet = 7.62 pounds per cubic foot
You can substitute your bale measurements and weight into this equation to calculate the density of your bales, no matter their size.
-Andrew Morrison