A laboratory test Mod AASHTO Test shows the optimum moisture content for soil compaction

is $6\%$ and the maximum dry density for compaction is $2195$ kg$/$m$^3.$if the Sg for the particles

is $2\mathrm{.}7,$ then determine:

a$)$ Zero air voids density moisture

b$)\%$ air voids in the sample in the lab

c$)$ What is required in the field if the technician says $98\%$ Mod$$

d$)$ Percentage air voids if the contractor achieved the required compaction at a moisture

content of $4\%.$