If the waste in a landfill has an un-compacted bulk density of 8.3 lb/ft3 and the landfill compaction is 1400 lb/yd3, how much volume reduction is achieved by compaction?
A gas has a pressure drop of 2 psi along a 1000 ft length of straight pipe. The gas has a density of 0.07 lb/ft3 and the pipe inside diameter is 4.026 inch. Approximately, what is the velocity of the gas as it flows through the pipe? Assume that the Darcy-Weisbach friction factor is 0.02.
A landfill with an expected lifetime of 20 years anticipates accepting 10 million yd3 of compacted waste over its lifetime. The soil daily cover is 35% of the landfill volume. Estimate the capacity of the landfill.