A clay fill has a bulk density of 1.9 g/cc. If the moisture content is 17.8% find the dry unit

The coefficient of permeability of sand at a void ratio of 0.80 is 0.47 mm/s. Estimate the coefficient of permeability of this sand at a void ratio of 0.50.

A certain saturated sand (S = 100,) has a moisture content of 25.1 percent and a specificgravity of solids of 2.68. It also has a maximum index void ratio of 0.84 and a minimum indexvoid ratio of 0.33. Compute its relative density and classify its consistency.

A sample of sand has a relative density of 40% with a specific gravity of solids of 2.65. The minimum void ratio is 0.50 and the maximum void ratio is 0.95. What is the unit weight (in units of pcf) of this sand in the saturated condition?

The coefficient of permeability of a sand at a void ratio of 0.62 is 0.03 cm/s. Estimate the coefficient of permeability at a void ratio of 0.48 using Casagrande equation.

A container of volume 2.83 X 10-3 m3 weighs 9.8 N. Dry sand was poured to fill the container. Thecontainer and the sand weigh 52.3 N. Calculate (a) the void ratio and (b) the porosity. Describe thecondition of the soil (loose or dense). Assume Gs. = 2.7

The void ratio and specific gravity of a sample of clay are 0.73 and 2.7 respectively. The voids are 92% saturated. Find the bulk density, the dry density and the water content. What would be the water content for complete saturation, the void ratio remaining the same?

A 1,000 cc container was just filled with sand in its loosest possible state and then the container was filled at the densest possible state. The dry masses of sand occupying the container space were 1,520 g and 1,830 g respectively. The sand in-situ has a void ratio of 0.64. If the specific gravity of solids is 2.65, find the relative density.

A certain saturated sand (S = 100%) has a moisture content of 27.9% and a specific gravity of solids of 2.61. It also has a maximum index void ratio of 0.90 and a minimum index void ratio of 0.33. Compute its relative density and classify its consistency. (Table on the right) Solution: Given the values of mmoisture content, specific gravity and degree of saturation, the void ratio can be estiamted as: e = Thus the relative density is found to be Dr = • According to the table, the soil is classified as %; soil. TABLE 3.3 CONSISTENCY OF COARSE-GRAINED SOILS AT VARIOUS RELATIVE DENSITIES (data from Lambe and Whitman, 1969) Relative Density, D,(%) 0-15 15-35 35-65 65-85 85-100 Classification Very loose Loose Medium denseª Dense Very dense "Lambe and Whitman used the term "medium," but "medium dense" is better because "medium" usually refers to the particle size distribution.

6 Problem: The max. dry unit weight determined in the laboratory for a quart sand is 102 lb/ft3. In the field, the relative compaction is 90%. Specific gravity of sand is 2.70. a) Determine the void ratio at the max. dry unit weight condition. Determine the void ratio of the sand in b) the field condition.