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1.In a falling-head permeability test the initial head of 1.00 m dropped to 0.35 m in 3 h, the diameter of the standpipe being 5 mm. The soil specimen was 200 mm long by 100 mm in diameter. Calculate the coefficient of permeability of the soil.
2.The in-situ dry density of a sand is 1.72 Mg/m^3 . The maximum and minimum dry densities, determined by standard laboratory tests, are 1.81 and 1.54 Mg/m^3, respectively. Determine the density index of the sand.
a) Calculate Darcy's velocity of the groundowater as well as the amount of water that passes through the aquifer each day. b) for the same aquifer, determine the seepage velocity of water through aquifer if the effective porosity is 32%.
The coefficient of consolidation of a clay for a given pressure range was obtained as 8x10^-3 mm^2/sec on the basis of one-dimensional consolidation test results. In the field, there is a 2-m thick layer of the same clay.
What diameter of a circular conduit flowing full would be required to carry the same quantity of flow as in a concrete trapezoidal channel of 20 ft width and 45 degrees side slopes, running at a depth of 3.0 ft
Determine the magnitude and the point of application the resultant of the four wind forces (distance right of AB, and distance below BC) when a=1.5ft and b=13ft.
An equal-tangent crest curve connects a +2% initial grade with a -1% final grade, and is designed for 55 mi/h. The station of the PVI is 233 + 40 with elevation 1203 ft.
Estimate C and of the rock mass and estimate the uniaxial compressive and tensile strengths of the rock mass
Given that uniform flow is subcrital and there is a weir in a rectangular channel, how do you determine what the weir height should be to force the flow to be critical. Draw this transition on a specific energy curve.
If the effective stack height of the plant is 100 m, and the ground reflects the SO2 emission perfectly what is the SO2 concentration at a sampling point located 2 m above the ground in the town.
The cross sectional area of each bar is A = 400 mm2 and L = 250 mm. If the cross bar is loaded with a load P = 250 kN, what are the normal stresses in the bars afterward
a highway reconstruction project is being undertaken to reduce crash rates. the reconstruction involves a major
a soil has a moist buldk density of 1950 kg/m^3, a dry bulk density of 1750 kg/m^3, and a soilds mass density of 2650 kg/m^3. determine the saturation ratio
Determine the dimensions of the box that will minimise thecosts of materials.Based on material costs alone,how many bins canthe manufacturer produce?
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