1 In order to restore a river embankment damaged by an earthquake, a soil of 50,000 m3 estimated after compaction was needed. From the laboratory tests of soil from the excavation site, the water content was w = 15%, and the void ratio was e = 0.60, and the specific gravity of soil was Gs =2.70. The soil was carried by truck to the construction site. The load capacity of the truck is 6.5 t. The construction of embankment was done by compacting after adding water so that the water content becomes 20%. The dry density of soil after compaction was 1.80 t/m3 . Answer the following questions. The density of water is 1.0 t/m3 . find the saturation Sr, the bulk density, and the dry density of soil at the excavation site. Find the total number of trucks needed for the construction. Find the total volume of soil excavated at the excavation site.
1 In order to restore a river embankment damaged by an earthquake, a soil of 50,000 m3 estimated after compaction was needed. From the laboratory tests of soil from the excavation site, the water content was w = 15%, and the void ratio was e = 0.60, and the specific gravity of soil was Gs =2.70. The soil was carried by truck to the construction site. The load capacity of the truck is 6.5 t. The construction of embankment was done by compacting after adding water so that the water content becomes 20%. The dry density of soil after compaction was 1.80 t/m3 . Answer the following questions. The density of water is 1.0 t/m3 .
find the saturation Sr, the bulk density, and the dry density of soil at the excavation site.
Find the total number of trucks needed for the construction.
Find the total volume of soil excavated at the excavation site.
Find the total volume of water added to obtain the prescribed water content. Assume that evaporation of water is negligible.
The embankment is needed to be constructed under the best condition of soil so that the embankment fulfills its function. Explain what kind of test is needed for that, that is, the purpose and the procedure of the test.
Thank you very much
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