Question: You are an earthwork construction control inspector checking the field compaction of a layer of soil. Specifications call for the compacted density to be at

You are an earthwork construction control inspector checking the field compaction of a layer of soil. Specifications call for the compacted density to be at least 95% of the maximum dry density based on modified proctor effort, with compaction water content within the range of optimum water content +-2%. The laboratory compaction curve based on modified proctor test is shown below. (Gs=2.7) To verify the amount of compaction in the field, you conducted the sand cone test and obtained the following data:
Excavated volume of soil =1165cm3
Wet mass of excavated soil =2230g
Dry mass of excavated soil =1852g
You are an earthwork construction control

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