A sand cone test was conducted for quality control during the compaction of sandy clay. The data are as follows.
![2030_4f1075ad-b411-4d6d-a5a2-ce7aaee0d2a0.png](https://secure.tutorsglobe.com/CMSImages/2030_4f1075ad-b411-4d6d-a5a2-ce7aaee0d2a0.png)
(a) Determine the dry unit weight.
(b) The standard Proctor maximum dry unit weight of the sandy clay is 17.8 kN /m3 at an optimum water content of 10%. The specification requires 95% Proctor dry unit weight at acceptable water contents ranging from 9% to 10.8%. Is the specification met? Justify your answer.