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A particular project has 650,000 cubic yards of material weighing 2600 lb/cy. your company has given you up to 10 - 657G tandem powered auger loaded scrapers to use to move the material. the 657g scrapers cost 160/ea per hour to operate and maintain. the haul road to the fill site is 1500 ft and has a total resistance of 8%. the return trip ia 2500 ft with a total resistance of 10% and includes a 2 minute flagman stop. the estimated jon efficiency is 48 min/hr. your compaction and support equipment cost $420/hr and is capable of maintaing your haul road and spreading and compacting as much material as 10 scrapers can haul. your estimators bid $1.88/cy to move material or $1222000. it will cost $15000 to move the support equip to and from the job. develop the best equipment plan for the operation and determine how much the company will gain or lose moving 650000 cubic yards.
The flow rate of the treatment plant is 2,000 m3/d. a. Calculate the mass of sodium bicarbonate (NaHCO3) that would be required per day to replace the alkalinity consumed.
Determine the slenderness ratio of a 5 m column with built in ends if its cross- section is (a) circular with a radius of 40mm and (b) 50 mm square. Use the concept of effective length.
Determine the rate at which heat is added in the boiler, the power required to operate the pumps, the net power produced by the cycle, and the thermal efficiency.
A closed cylindrical tank filled with water has a hemispherical dome and is connected to an inverted piping system. The liquid in the top part of the piping system has a specific gravity of 0.68.
A jet on an aircraft carrier is launched by a catapult. What are some of the parameters that would be taken into account to make sure the aircraft achives a specified speed at the end of the ship
Twenty years of annual maximum rainfall depths are given below. Determine the rainfall depths to be used for storm structure design for the following annual return periods: 2, 5, 10, 25, 50, & 100 year.
The cash flow of alternatives J and K is shown below. If the interest rate is 10% per year, which alternative should be selected. Perform a Present Worth analysis.
in inclined circular gate with water on one side shown in the figure. determine the total resultant force acting on the gate and the total location of center pressure.
An airport corridor is 30 ft wide. given a peak demand of 300 pedestrians per minute and an average walk speed of 3 ft/s, estimate the LOS at the corridor
After the copper mass is added, the final temperature of the mixture is 38 degrees Celsius. By checking the mass, it is determined that 1.2 grams of water evaporated. What was the temperature T
Concrete pier is loaded on top with a uniformly distributed load of600 lbs per square foot. Investigate the state of stressat a level of 4 ft. above the base.
the hypothetical velocity distribution in a horizontal rectangular open channel is v0.3y msnbspwhere v is the velocity
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