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a) The soil profile on a site consisted of 4 m thick homogeneous clay deposit overlying an impermeable rock. The investigation results indicated that the clay had a saturated density of 1.6 Mg/m3, an average initial void ratio of 1.8 and the preconsolidation pressure at the mid depth of the clay layer was 20 kPa. A piezometer standpipe was installed at the mid depth of the clay layer. The water table always remained at the same elevation as the original ground surface. Following the site investigation, a sand fill, which was large in lateral extent, was placed on the ground surface. The height of the sand fill was 1 m and the total density of the sand fill was 2.0 Mg/m3 above and below the water table. Two years after the placement of the sand fill, the ground settlement was 30 cm and the water level in the piezometer standpipe was at 0.6 m above the water table. Ignore the buoyancy effect on the applied pressure from the sand fill in your calculation. Treat the clay as one layer; subdivisions are not required.(i) Calculate the coefficient of consolidation and the compression index of the clay. The recompression index of the clay can be taken as 10% of its compression index.(ii) Three (3) years after the placement of the sand fill, a soil sample was taken from the mid depth of the clay layer and a consolidation was performed on the sample.(ii-a) Estimate the preconsolidation pressure of the soil sample and calculate the consolidation settlement 3 years after the placement of the sand fill.(ii-b) Calculate the water level in the piezometer standpipe with respect to the water table 3 years after the placement of the sand fill.b) Briefly explain the difference between piezometer and tensiometer with respect to the working principle, special design consideration and limitation of the instrument.
A pole is held vertically on a soil surface by three equally spaced wires tied to the top of the pole. Each wire has a tension of 1 kN and is inclined at 45 degrees to the vertical.
a 9in radius cylinder of weight 18lb rests on a 6lb carriage. the system is at rest when a force p of magnitude 2.5 lb is applied ( p is coming out of the car the cylinder is sitting on and going to the right) for 1.2s.
Write a VBA function that receives a gauge pressure and barometric pressure and then returns the absolute pressure. Have the function check whether the barometric pressure is zero
What are the proceeds of this sale and if the note was sold at simple discounting conditions instead, at a simple discount rate of 17%, how much would the sellerleceive for the note?
The proposed 4 story reinforced concrete office building including a green roof is to be constructed. The building is confirm to IBC 2006/2009 and ACI-318-11. 1) Calculate Loads on Floor and Roof one way slabs.
Lab studies have shown that the rate constant associated with the process are as follows: k = 0.95 mg COD/mg VSS-day; Y = 0.48 mg VSS/ mg COD, half-saturation K = 85 mg COD/L; ke = 0.07 d-1.
A hardwood beam of rectangular cross-section 150x300 is simply supported over a span of 8m, and is loaded as sketched. Determine the maximum deflection of the beam. (Youngs modulus E = 12 x 10^3 MPa)
If we apply a breaking system to a skateboard while the speed of the skateboard is 5Milies per hour, the rider average weights is 180bounds while his height is 170 cm. You can assume the distance as it is 50meters.
Water at a pressure of 13 atm, at street level, flows into a building at 3m/s through a 6 cm diameter pipe. The pipe tapers down to a 2 cm diameter by the top floor 50 m above.
Ethylene enters a turbine at 10 bar and 450 K, and exhausts at (atm) and 325 K. For mass flow in = 4.5 kg s^-1, determine the cost C of the turbine. State any assumptions you make. Data: H1 = 761.1 , H2 = 536.9 kg^-1, C/$ = (15,200)(1W1/kW)^0.573
Vehicles begin to arrive at a toll booth at eight vehicles per minute from 9 A.M. to 10 A.M. The booth opens at 9:10 A.M. and services at a rate of ten vehicles per minute until 9:40 A.M. From 9:40 A.M. until 10 A.M.
a cantilever beam is additionally supported using two tierods. Both rods attach to the end of the beam. One rodcomes off at 45 degrees and attaches to the same wall that the beamis solidly fixed to
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