Problem 7: A 3-m high sandy fill material was placed loosely at a relative density of 55%. Laboratory studies indicated that the maximum and minimum void ratios of the fill material are 0.94 and 0.66, respectively. Construction specifications required that the fill be compacted to a relative density of 85%. If G,=2.65, determine: Dry unit weight of the fill before and after compaction Final height of the fill after compaction