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A sand is densified by compaction at a construction site so thatthe void ratio changes from 0.8 to 0.5. If the specific gravity ofthe soil solids is 2.7, what is the increase in the dry unit weight of the sand (in pcf and kN/m3)?
If an 18.9 L (5 gallon) bucket of PCE is released (and equally distributed) into a 3.79x10^8 L (100,000,000-gallon) aquifer, will the PCE standard of 5 microgram/L under the Safe Drinking Water Act be exceeded
Above the water table the soil mass unit weight is 16 kN/m^2. Below the water table the saturated unit weight is 19.5kN/m^2. The maximum column load is 330,000 lbs. Recommend the number and depth of borings.
The slope of the hill is such that for each mile (5280 ft) of horizontal distance, the change in elevation is Δz. Determine the maximum value of Δz if the flow is to remain laminar and the pressure all along the pipe is constant.
Consider a beam of length 1.5L(meters) with hinge support and roller support from both the ends (respectively left and right) at distance of L/4. The beam is subjected to triangular loading from 0 to q KNper meter.(left to right)
If a watershed of drainage area 100 mi^2 has abstractions of 2.5 in/hr, what runoff volume will show up in the nearby stream in addition to baseflow for a rainfall of 5-hr duration with an intensity of 4 in/hr
Civil and Environmental Engineering Question, 1. How is the problem of technology choice related to process selection and product design?
Compare the three-decimal-place values of the two approximations at x=(1/2) with the value y(1/2) of the actual solution . then do the same for PART B: y'=-2xy , y(0)=2 ; y(x)=2e^(-x^2)
Assuming the following equation represents the true distribution in the vertical, determine the actual distance below the surface at which the velocity, u, equals the depth-averaged velocity, U.
What is the average length of queue, the average time spent in the system, and the average waiting time in the queue?
Create a precedence (activity-on-node) diagram based off the attached activity list. You must follow the below recommendations as we discussed in class. 1) draw nodes as rectangles. It helps define the left side as starting and the right side as en..
While washing up Grandma's old aluminum cooking pot I noticed that it would just barely touch the bottom of the sink if I added 2.5 cups of water to it. The pot is 3.5 in high and 9.5 in diameter. Thickness of aluminum is 3/16 in.
Determine the maximum possible precipitation at New York City that may be encountered on a 100 mi^2 drainage area over a 96 hr period.
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