Describe why soils are compacted in the field. How is the degree of compaction ensured in the field (i.e., control of field compaction)? Distinguish among 'compaction' and 'consolidation' of soils. Bring out the effects of (i) moisture, (ii) comp active effort and (iii) soil type on the compaction characteristics of soils. State the answer with typical 'moisture-dry density' plots.