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A borehole at a site reveals a soil profile comprising 6 m deep fine sand layer overlying a 9 m thick clay layer, which in turn overlies weathered bedrock. The groundwater table is located at a depth of 4 m from the ground surface. A zone of capillary saturation exists in the fine sand layer above the groundwater table. Above the zone of capillary saturation, the fine sand layer can be considered to be dry. The air entry value (AEV) for fine sand layer is 15 kPa and its specific gravity (Gs) and porosity (n) are 2.65 and 0.315, respectively. The natural water content (w) and void ratio (e) of the clay layer are 28.5% and 0.7, respectively. The unit weight of water (γw) is equal to10 kN/m3
a. At what depth from the ground surface is the top of the capillary saturation zone located?
b. Calculate and plot the distribution of total and effective vertical stresses as well as pore-water pressure with depth from the ground surface up to the bedrock surface.
Prove that Ev=kP for an isentropic fluid process given that constant=P/p^k, where p is the density (roe), P is the pressure, k is the ratio of specific heats.
A saturated sample of soil, 38mm in diameter and 75mm high, hasbeen prepared for a triaxial test. Total mass of the sample was measured as 144.6grams, and the initial moisture content determined at 25.2%. The Specific Gravity of thesolids was estimat..
what would the height of a water tower with a 500 gallon tank have to be, to bring water ( by gravity ) from sealevel over a distance of 2.5miles with an elevation of 300ft
A permeation membrane separates an inlet air stream (79 mol% N2, 21 mol% O2) into a permeate stream and a reject stream. The inlet stream conditions are 293K, 0.5 MPa and 2 mol/min; the conditions for both outlet streams are 293 K and 0.1 MPa.
sled and rider with a total weight of 200 lb travel down smooth slope defined by equation y=x^2/20. At x=40 ft the sled's speed is 10 ft/s. At x=40 ft determine rate of increase of speed and the normal force which the slope exers on the sled.
Successive plus and minus sights taken on a downhil line of levels are listed below. the values represent the horizontal distances between the instrument and either the plus or minus sights.
for this purpose replace this force by its equivalent of two forces at At Ft parallel and Fn perpendicular to the beam. Determine Ft and Fn.
The continuity equation is just the water balance for the slope or any small portion of the slope and can be given as: p - fp = RO where i = rainfall rate, fp = infiltration capacity, and RO = runoff rate, all expressed as a depth per time
A bug is crawling up the leg of a man on a train. The velocity of the bug relative to the man is 0.3 m/s k . The mas is waling from one side of a carriage to the other with a vlocity relative to the train of 1.2 m/s j.
Stack gas samples were collected from a sample of 50 incinerators in Chicago. Of the 50 samples, only 18 met an environmental standard for the concentration of a hazardous compound. Can it be concluded that fewer than half of the incinerators in C..
Using the method of Lee et al., predict the temperature required in an isothermal plug flow incinerator to reduce the xylene level in a waste gas from 100 ppm to 10 ppm. Assume a residence time of 0.7 sec.
Assuming a gage reading in the approach well(haa) of 13 ft, select a Parshall flume capable ofmeasuring a flow of 700 ft/s without submerging the flow.
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