The results of a field unit weight determination test performed by means of the sand cone method are as follows:
Calibrated dry unit weight of Ottawa sand = 104 pcf
weight of Ottawa sand to fill the cone = 0.258 lb
weight of jar + cone + sand (before use)= 13.21lb
weight of jar + cone+ sand (after use)= 6.2 lb
weight of moist soil from hole= 7.3 lb
moisture content of moist soil= 11.6%
Determine the dry unit weight of compaction in the field