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At a point in a saturated normally consolidated clay layer the soil is subject to an in-situ vertical effective stress of 50kPa. The soil at the point has a moisture content of 44% and a compression index of 0.45. The effective stress at the point is to be rapidly increased to 120kPa.
a) What would be the void ratio of the clay at the point immediately after increasing the stress?
b) What would be the void ratio at the point a long time after increasing the stress?
A slurry containing 20 percent by weight of limestone (CaCO3) is processes to separate pure dry limestone from water. If feed rate is 2000kg/h, how much CaCO3 is produced per hour?
A 4x4 carries an axial compressive force caused by dead, love, and roof live loads. Lumber is No. 1 Douglas Fir-Larch. Cm = 1.0 , Ct = 1.0, Ci = 1.0. The unbraced length of the member is 12 ft.
On a single graph, plot the PDFs if E is assumed to be normally, lognormally, and gamma distributed. Plot the PDFs for E values between 10,000 and 50,000 kips/in2. Make sure to label the axes and use a legend to label the curves.
Given a variable speed centrifugal pump initially pumping 32,000 pounds mass per hour (lbm/hr) at a discharge pressure of 35 pounds per square inch, gauge (psig), calculate the final, stable discharge pressure after the pump speed is raised by 50%. S..
a vertical curve is to connect two tangents that intersect at station 5000 and the elevation 500.00ft. the back tangent
A structural steel beam supports a roof that weighs 20 psf. An analysis of the loads has the following: S=12 psf, L_r=18 psf and W=38 psf (upwards) or 16 psf (downwards). If the beams are spaced 6ft 0 in apart
Determine the forces on the beam and what force is needed at C to put the beam in equilibrium
You are furnished with three sizes of particles. One is gravel with porosity of 0.32, the second is a coarse grained sand with porosity of 0.37, and the third is a fine grained sand with porosity of 0.23. If the coarse grained sand
Calculate the critical radius and the number of atoms in the nucleus of the homogeneous nucleation in GERMANIUM. The latent heat of fusion is 8100 cal per g-mile (atom) and the coefficient of linear expansion is 5.75*10^-6 per K
The combustion of 52.8g of butane produces 104.0g of CO2. what is the percentage yield of the reaction
A cylindrical tank 5-m in diameter is filled with water to 3-m depth. A very short horizontal pipe with 20-cm diameter and rotary valve is used to drain the tank from the bottom. How long does it take to drain the tank to 50%?
Determine a composite SCS runoff curve number for a 600-acre basin that is totally within soil group C. The land use is 40 percent contoured row crops in poor hydrologic condition and 60 percent native parture in fair hydrologic condition.
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