Appendix B STANDARD WASTE CONVERSIONS The following sections provide conversions for solid waste and recyclable materials. Section 1 provides formulas to convert solid waste volume (cubic yards) into tons. Section 2 includes conversion factors to estimate the volume and weight of a number of solid waste and recyclable materials. 1. To convert yards to tons: A: For un-compacted to convert the units of cubic yards into tons, using the standard density of trash value of 250 pounds per cubic yard: Using cubic yards, multiply by 250 pounds per cubic yard, divide by 2000 pounds per ton, to obtain value in tons. “X” x 250 ÷ 1 = ______ cubic yards pounds ton tons “X” 2000 cubic yard pounds This equals: x 0.125* = _______ cubic yards tons tons “X” cubic yard *For compacted trash, use 0.4 in the formula instead of 0.125. In this case, 8 yards = one ton. B: To determine your own density value for un-compacted trash (instead of using the standard value of 250 pounds per cubic yard), using a 32 gallon trash can: Weigh the trash can both filled and empty (use a full 32 gallon trash can filled with trash roughly level to the top); Subtract the empty weight from the filled weight to get the weight of trash ( filled weight empty weight = – weight of trash); Use the formula, using your weight of trash (pounds), divided by 0.15 cubic yards per 32 gallon trash can, to “Y” obtain your value in pounds per cubic yard; which equals: / 0.15 = ________ pounds cubic yards pounds “Y” 32 gallon can cubic yard 32 gallon can Substitute this value for the 250 pounds per cubic yard value in Method A above. This would be the more accurate measure of your park’s specific waste. C: For compacted trash, to convert cubic yards into tons: To use a compaction ratio, multiply the appropriate ratio times the un-compacted trash weight in Formula A to obtain the compacted trash weight. x 3 (compaction ratio) x 250 x 1 = ______ cubic yards pounds ton tons “X” 1 2000 cubic yard pounds Typical compaction ratios for trash: 3:1 (typical) 4:1 (higher-compaction vehicles)
Appendix B STANDARD WASTE CONVERSIONS The following sections provide conversions for solid waste and recyclable materials. Section 1 provides formulas to convert solid waste volume (cubic yards) into tons. Section 2 includes conversion factors to estimate the volume and weight of a number of solid waste and recyclable materials. 1. To convert yards to tons: A: For un-compacted to convert the units of cubic yards into tons, using the standard density of trash value of 250 pounds per cubic yard: Using “X” cubic yards, multiply by 250 pounds per cubic yard, divide by 2000 pounds per ton, to obtain value in tons. “X” cubic yards x 250 pounds ÷ 1 ton = ______ tons cubic yard 2000 pounds This equals: “X” cubic yards x 0.125* tons = _______ tons cubic yard *For compacted trash, use 0.4 in the formula instead of 0.125. In this case, 8 yards = one ton. B: To determine your own density value for un-compacted trash (instead of using the standard value of 250 pounds per cubic yard), using a 32 gallon trash can: Weigh the trash can both filled and empty (use a full 32 gallon trash can filled with trash roughly level to the top); Subtract the empty weight from the filled weight to get the weight of trash ( filled weight – empty weight = weight of trash); Use the formula, using “Y” your weight of trash (pounds), divided by 0.15 cubic yards per 32 gallon trash can, to obtain your value in pounds per cubic yard; which equals: “Y” pounds / 0.15 cubic yards = ________ pounds 32 gallon can 32 gallon can cubic yard Substitute this value for the 250 pounds per cubic yard value in Method A above. This would be the more accurate measure of your park’s specific waste. C: For compacted trash, to convert cubic yards into tons: To use a compaction ratio, multiply the appropriate ratio times the un-compacted trash weight in Formula A to obtain the compacted trash weight. “X” cubic yards x 3 (compaction ratio) x 250 pounds x 1 ton = ______ tons 1 cubic yard 2000 pounds Typical compaction ratios for trash: 3:1 (typical) 4:1 (higher-compaction vehicles)
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