What is the optimum water content, maximum moist bulk density, and maximum

dry density? Please clearly state out how you determine those values. Show

calculations to receipt full credits

$($b$)$ The specification for compaction states that the field$-$compaction soil must be at

least $95\%$ of the maximum dry density and $92\mathrm{.}5\%$ within the of the optimum

moisture for the compaction curve. You dug two holes at two different locations.

First location: You dig a hole at in the compacted layer onsite and extract a sample

$($volume $=1000$ cm$3)$ that weighs $1\mathrm{.}92$ kg wet and $1\mathrm{.}59$ kg dry.

Second location: You dig a hole at in the compacted layer onsite and extract a

sample $($volume $=1000$ cm$3)$ that weighs $1\mathrm{.}82$ kg wet and $1\mathrm{.}54$ kg dry.

For each hole, determine the followings:

$($i$)$ Does the sample meet the specification of dry unit weight?

$($ii$)$ Does the sample meet the specification of water content? $($iii$)$ If the in$-$situ soil

conditions do not meet the specification, what is your recommendation to the

contractor who is performing the compaction? $($Show your working clearly