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length of trench is 60
A trench was excavated in the soil at a site. The dimension of the trench was following, length equal to 2nd and 3rd digits of your student ID, width 0.5m and depth 800mm. An undisturbed cylindrical soil sample was collected before the excavation. The sample prepared had a length, 70mm and diameter of 35mm. The original mass of the sample was 101.5gm whereas after the oven drying become 67.3gm. Again, the sample was submerged in the water to make it fully saturated. After full-saturation the sample mass was measured to be 109.0 gm. The soil initial soil obtained from the trench was stockpiled and then used as a trench backfill. The soil is to now be compacted in to the trench in uniform layers at a density of 1800 kg/m3 and a moisture content of 14%. Find the following information for the soil, a. the initial water content of the soil after excavation b. in-situ void ratio of the soil C. d. the type of soil (i.e. clay or sand) based on initial void ratio dry density of in-situ soil soil density of in-situ soil e. . f. bulk density of in-situ soil g. specific gravity of the soil h. initial degree of saturation final dry density of the backfill i. j. final void ratio after backfill k. final degree of saturation of the backfill I. After all the excavated soil is compacted in to the trench what depth of the soil will still remain to be filled?