What term describes a layer of 6 inches compacted thickness for full width?

What term describes a layer of 6 inches compacted thickness for full width?

• A. Layer
• B. Bed
• C. Lift
• D. Stratum

Answer: (C)

In earthwork, a lift is the compacted layer of fill placed to a specific thickness across the entire width. The idea is to build up the surface in uniform slices, compacting each slice before adding the next, so the density and surface finish stay consistent. Six inches is a common compacted thickness for a single lift, which balances the effort of compaction with achieving the required strength and stability. A generic word like layer doesn’t imply compaction or a set thickness, while bed or stratum are more geological terms and don’t describe the field practice of delivering a controlled, full-width thickness of material.

In earthwork, a lift is the compacted layer of fill placed to a specific thickness across the entire width. The idea is to build up the surface in uniform slices, compacting each slice before adding the next, so the density and surface finish stay consistent. Six inches is a common compacted thickness for a single lift, which balances the effort of compaction with achieving the required strength and stability. A generic word like layer doesn’t imply compaction or a set thickness, while bed or stratum are more geological terms and don’t describe the field practice of delivering a controlled, full-width thickness of material.