Reference no: EM132238522

Question 1. Data points from a standard moisture-density test on a fine-grained soil are given in the following table:

Water Content               Total Density

(%)                                ONO

 20.0                             99.6

  23.1                            105.9

25.6                              111.2

28.5                              115.1

31.3                               113.4

34.0                               1115

Reduce the data and plot the water content versus dry density curve. Clearly indicate val-ues for optimum water content and maximum dry density from this test.

Question 2. For the soil described in Problem I, assume that a field density test on a fill lift indicates a water content and dry density of 23.2 percent and 88.6 pcf, respectively. Would specifica-tions calling for a minimum relative compaction of 96 percent of standard maximum dry density and a water content 62 percent of optimum be satisfied?

Question 3. A subsurface exploration report shows that the average water content of a fine-grained soil in a proposed borrow area is 22 percent and that its average natural dry density is 82 pcf. This soil is to be placed in a compacted fill with a dry density specified at 96 pcf. How many cubic yards of borrow will be required to produce 50,000 yd3 of fill? What is the shrinkage factor for the borrow?

TextBook: Schroeder, W. L.; Dickenson, S. E.; Warrington, Don C.. Soils in Construction. Waveland Press, Inc.