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The dry weight of a core is 28.20 gm. When saturated with a brine having a density of 1.15 gm/cc, the weight increases to 31.50 gm. Calculate the apparent porosities if the matrix is 1) quartz or 2) calcite.
Given s=.30/(60-u), where s is the spacing (space headway) in miles, and u is the speed in miles per hour, derive the relationships u-k, u-q, and q-k. Also, estmate the capacity (qmax) of the roadway.
A project involves transporting iron pipe to a jobsite that is 43 miles from the supplier. The pipe will be hauled in trucks that can carry 16 pipes per load. Each pipe is 20 ft in length. The average haul speed of a truck will be 50 mi./hr and re..
If an alternative base material is available for $5,791.50 per lane-mile per inch depth, to use it, the minimum depth for asphalt has to be increase to 6 inch with no change of base and subbasedepth. What will be the total cost per lane-mile per i..
Using Rate of Return Analysis, determine the most economical alternative below. Assume a minimum attractive rate of return of 6%, and a 5-year life with no salvage value for each. The alternatives are mutually exclusive
A conical tube of length 8 m fixed vertically with its smaller end upwards. The velocity head and pressure head at upper ends are 1.27 m and 2.50 m respectively. The velocity head and pressure head at lower ends are 0.203 m and 5.407 m respectivel..
The void ratio of soil in the borrow pit is 1.12. Estimate the volume of soil (cubic meters) that must be excavated from the borrow pit.
Lines of levels were run requiring n instrument setups. If the rod reading for each backsight and foresight has a standard deviation δ what is the standard deviation in each of the following level lines?
Suppose that the distance from the lake outlet to the withdrawal cannot be more than 20 mi. What should be the new volume of the lake?
No incisions are noted. Find the maximum axial tension using LRFD. Can we resist the same force in compression if the member is 10ft long?
Calculate the water/cement ratio of the cement paste in which all the cement will hydrate to leave no capillary pores. (density of cement: 3.1 g/cm3) ?
If the BOD5 of a municipal wastewater is 310 mg/L and the BOD U is 340 mg/L, determine the BOD reaction rate constant (base e). What would be the 3 day 30°C BOD Assume, temperature coefficient = 1.047.
a spot speed study was conducted on a freeway on which the mean speed and the standard deviation were found to be 72 .4 mi/hr and 5.4 mi/hr, respectively. what is the range of the values that would be expected to contain the middle 95 percent of s..
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