What is the difference between a bank cubic yard, a loose cubic yard, and a compacted cubic yard? Why are they important in estimating excavation?
What will be an ideal response?
Bank cubic yard represents soil in its natural condition. Cuts and excavation are measured in bank cubic yards.
Loose cubic yards represent soil after it has been excavated and has yet to be compacted. The density of loose soil is less than the same soil in its bank condition. Soils are transported in their loose state; therefore, volume of the soil transported is larger than the volume excavated.
Compacted cubic yards represent soils after they have been compacted. In general, soils in a compacted state are denser than soils in the bank condition; therefore, more soil needs to be excavated than volume of the backfill.
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