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For construction of an embankment, the soil is transported from a borrowed area using a truck which carries 5.5 m^3 of soil at a time, with the following details: For the Borrowed Pit: bulk unit weight= 16 KN/m^3 and moisture content = 6.7% ; For Truck (loose): bulk unit weight = 10.7 KN/m^3 , moisture content 5.2% ; For Field (compacted): bulk unit weight = 19.3 KN/m^3 , moisture content = 14% Determine the number of truck loads required to obtain 150m^3 of compacted earth fill and the volume of the borrowed pit.
A gas has a volume of 2.0 liters, a pressure of 1.2 atm, and a temperature of 30 degrees Celsius is heated to 60 degrees Celsius and compressed to a volume of 1.5 liters. What is the new pressure
assuming that the contaminant travels mainly by advection, propose any operational changes to the given layout to prevent the river from being contaminated.
The thickness of geonet is 0.2 inch (5 mm). Assume the maximum inflow rate is 0.14 inch/hour. The liquid head over the geomembrane liner is 2 inches. The index properties of the soil placed over the geotextile are as follows
The aerodynamic drag of a new sports car is to be predicted at a speed of 50mph at an air temperature of 25 degrees Celcius. Automotive engineers build a one-fifth scale model of the car to test in a wind tunnel.
A minimum contact time of 30 min is required to reduce the pathogen concentration from 100 pathogens/L to below 1 pathogen/L through a first-order decay process. You plan on treating water at a rate of 1,000 gal/min.
Water is flowing at a depth of 10 ft with a velocity of 10 ft/s in a channel of rectangular section. Find the depth and change in water surface elevation caused by a smooth upward step in the channel bottom of 1 ft.
each month the splendid dry cleaning company buys one barrel ( 42 gal., 0.160 m^3) of tetrachloroethylene (C2Cl4) (M.W.= 166, p= 1.594 g/cm^3) ninety percent of the fluid is lost to the atmosphere and 10% remains as residue to be disposed of.
A car weighing 4000 pounds strikes the stopping barrier depicted below head on at a speed of 70 mph. The stopping force in the barrier is a function of how far the car penetrates into the barrier.
The peak-hour volumes at two locations were counted and found to be equal. However, the PHFs were .85 at the first location and .60 at the second. Describe the difference between the two locations if t=5 min.
What power must the pump supply to the system to pump the oil from the lower reservoir to the upper reservoir at a rate 0.20 m^3/s. Sketch the HGL and the EGL for the system.
Draw the influence line for the support reaction at A and calculate the support reaction at point
A scale for rapidly weighing ingredients in a commercial bakery operation is shown. An empty bowl is first placed on the scale. Electrical contact is made at point A, which illuminates a light indicating the bowl's contents are underweight.
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