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1.A cone penetration test has been conducted and has measured a con resistance of 85 kg/cm^3 at a depth of 10m. the vertical effective stress at this depth is 159KPa and the over consolidation ratio is 2, The soils at this depth are quartz sands. Compute the relative density.
2.When a fluid flows through a sharp bend, low pressures may develop in localized regions of the bend. Estimate the minimum absolute pressure (pmin in psi) that can develop without causing cavitation if the fluid is water at 80 oF.
3.A high altitude balloon has a long steel wire hanging from it. The length of the wire is 7,000 m, the weight density of the steel is 78 kN/m3 and its ultimate stress is 620 MPa. Find the safety factor of the wire against breaking from its own weight.
Explain, in some detail, the design conditions and shear strengths used for each design condition when working with clay soils?
what is the pressure applied to the soil under the above load. How does this compare with an allowable bearing capacity of 100kPa. Does this allow for a reasonable factor of safety.
A monorail train starts from rest on a curve of radius 400 m and accelerates at the constant rate a_t. If the maximum total acceleration of the train must not exceed
Describe the problem of lack of coordination between design and construction in a traditional contract. In agency CM,what expertise does the CM provide during the pre-design and design phase.
Three stock car drivers are racing around a circular bend. They are each circling the bend at different radii: r(1)=249 m , r(2)=255 m , and r(3)=261 m . At a given instant, all three are traveling at the same transverse rate of rotation
The thickness of each layer is determined by the "last" ID number. Four student numbers are used as the example - Circular and non-circular slip surfaces should be considered
a sewage treatment works stw with 4 single-stage trickling filters has become organically overloaded due to the
The acceleration of a particle is defined by the relation a= -0.7v where a is expressed in in/s2 and v in in/s. Knowing that t= o the velocity is 30in/s, determine 1.) the distance the particle will travel before coming to rest
The arrival rate at a parking lot is 6 veh/ min. Vehicles start arriving at 6: 00 P. M., and when the queue reaches 36 vehicles, service begins. If company policy is that total vehicle delay should be equal to 500 veh-min, what is the departure ra..
The mean score of students on an aptitude test is 72 points with a standard deviation of 8 points. What is the probability that two groups of students, consisting of 28 and 36 students respectively,
The settlement of a laboratory 10-cm thick consolidation specimen is 5 mm in 1 hour with a coefficient of consolidation of 0.005cm2/s. What will be the total settlement
Calculate the ionic packing factor for fcc NaCl. Take the atomic radii for Na and Cl as 0.097 and 0,181 nm respectively.
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