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1.The vertical effective stress at a certain point in a loose sand is 1000lb/ft^2. If an earth quake were to occur, how much excess pore water pressure would need to develop at this point for liquefaction to occur? Show a numerical rationale for your answer.
2.Compute the 50 year flood discharge on a large creek in Northern Ohio if the total discharge area is 75 mi^2. The average soil infiltration is 0.5 in./hr; the main channel slope is 0.008. (The rain fall intensity is 14.)
3.A 2.5 hr long uniform rainfall resulted in runoff hydrograph that has the shape of an equilateral triangle. The base of the triangle is 64 hr; the peak flow is 535 cfs; the drainage area is 5.7 mi^2. Determine the corresponding unit hydrograph if the base flow for the channel is 10 cfs.
4.A 300-acre forested watershed in fair hydrologic condition located on the clayey flat coastal region of Southern California receives 4.0 in. of rain in a 24 hr period. Determine the corresponding flood peak of the runoff using the SCS curve number method.
a ship has a cross-sectional area of 4000 ft^2 at the water line when the draft ( depth below the water line of the vessel bottom) is 10 ft. How many pounds of cargo will result in an increase of draft of 2 in ( specific weight is 64 Ib/ft^3 )
A 1 m diameter unfinished concrete pipe (n = 0.015) has a slope of So = 0.001 and conveys water at Q = 0.5 m3/s. Find the normal depth yo and critical depth yc.
Water enters a cylindrical tank through two pipes at rates of 250and 100 gal/min. If the level of water in the tank remains constant, calculate the average velocity of the flow leaving thetank through an 8-in. inside-diameter pipe.
calculate the chord lenght between stations 75.00 and 75.00 on a circular curve with Da=5.5 degrees.
How many mL of water will it take to get 10 pounds of dry aggregate to a moisture content of 5%. 1 kg=2.2 pounds
At the inlet the steam is at 1 MPa and 320 C, and leaves the turbine at 20 kPa. The work output of the turbine is measured to be 600 kJ/kg (of steam passing through the turbine).
A wastewater treatment plant receives 15 mgd of flow, with solids concentration of 230 mg/L. How many pounds of solids enter the plant every year
Trapezoidal channel is to be excavated in alluvial material on a bed slope of 1:10000. The side slopes will be 1(vertical) : 2(horizontal). Details of the bed material are as follows:
Write the following iterated integral as a double integral with aregion R, and use the change of variables to compute the integral:∫x=2x=0∫y=√(2x-x²)y=0√(x²+y²) dy dx
Devise an absolute temperature scale where the boiling point of water at 1 atmosphere (101 kPa) pressure = 100 degrees in your scale. What is the ice point of water in your scale
A nuclear facility in a coastal region is built to withstand ocean wave forces. Suppose the annual maximum wave height of the ocean waves (above the sea level) is a lognormal random variable with mean height of 4.0 meters and a c.o.v. of 0.8
What is the difference between universal beam and universal column steel sections in terms of performance in bending
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