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a rubber ball contains saturated sand and water reaching into the neck of the glass tube inserted into the ball above
in a laboratory quick sand is being produced in a large cylindrical tank by pumping water into it from below while the
a colleague in a foreign country reports that the youngs modulus of a certain layer has been back-calculated from the
a soil sample is being tested in the laboratory by cyclic shear stresses of constant amplitude in each cycle there are
in a confined compression test see figure 141 a soil sample of 2 cm thickness has been preloaded by a stress of 100 kpa
a clay layer of 4 m thickness is located below a sand layer of 10 m thickness the volumetric weights are all 20 knm3
a tunnel of square cross section 8 m times 8 m has a weight above water of 50 ton per meter length the tunnel is being
the tunnel of the previous problem is sunk into a trench that has been dredged in the river bottom and then covered
q1sketch a flow net for the situation shown in figure 87 and calculate the total discharge compare the result with the
suppose that in a case as considered in the previous problem the soil consists of 1 m clay on top of a thick layer of
for a system of air conditioning water is extracted from a layer of 10 m thickness having a hydraulic conductivity of 1
a well in a circular area of radius 1000 m appears to lead to a lowering of the groundwater table a drawdown of 1 m at
draw a sketch of the solution 114 for values of rr from 0001 to 1 the value 0001 applies to the value r rw where rw is
a block of wood having a volume of 01 m3 is kept in equilibrium below water in a basin of water by a cord attached to
1 in a sample of sand c0 a stress state appears to be possible with sigmaxx 10 kpa sigmayy 20 kpa and sigmaxy 5 kpa
in a certain town it is required that in a period of 20 years after the sale of a terrain the deformation may not be
modify the computer program 162 so that only one term of the solution is calculated by omitting line 200 in the program
a terrain consists from top to bottom of 1 meter dry sand gamma 17 knm3 4 meter saturated sand gamma 20 knm3 2 meter
suppose that in the tests mentioned above the test results are that after one day a strain of 2 is observed and after
in a test on a clay sample of 2 cm thickness it has been measured that after 15 minutes the pore pressures are
in a laboratory test on a clay sample it has been forgotten to measure the deformation immediately after the
1 the computer programs in this chapter can not be used if t 0 because then the loop will continue forever the series
the consolidation process of a clay layer of 4 meter thickness is solved by a numerical procedure the consolidation
execute the calculations descibed above using program 172 or some other program for instance using excel and
a sand layer is located below a road construction of total weight 20 kpa the sand has been densified by vibration