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Determine the cycle time for a single engine scraper rated at 21 cy heaped that is used to haul material from a pit to a fill 900 ft away under severe conditions. The average haul speed will be 14 mph and the average return speed will be 20 mph. Assume that at an average speed of 5 mph, that 200ft is required both to accelerate and decelerate. The operating efficiency to a 50-min hour. It will take 0.80 min to load this scraper.
Many years ago, well-known architect Frank Lloyd Wright designed a mile-high skyscraper, which has never been built.
Determine the required pumping rate. the aquifer has T= 1600 m2/day and the wells each have radius of influence of 600m.
Determine the effective size as well as the uniformity coefficient and coefficient of curvature for each soil. Determine also the percentages of gravel, sand, silt, and clay according to (a) ASTM, (b) AASHTO, (c)USCS, and (d) the British Standard.
where u(t) is in vehicles per minute and t is in minutes. When will the queue clear?
what is the final dissolved oxygen concentration (in mg/L) in the waste lagoon after all of the ammonium (NH4 + ) is converted to nitrate? Recall that 4.57 mg of O 2 is need per mg of ammonium (as N) oxidized during nitirification. After all of the..
Briefly explain the difference between piezometer and tensiometer with respect to the working principle, special design consideration and limitation of the instrument.
a) The maximum flow rate that can be achieved without cavitation occurring in the piping system. b) The maximum elevation of the highest point of the piping system to avoid cavitation.
The temperature of the poker at the third points of the poker using three elements of equal length. Use the finite element method. You may use Mathcad to solve this problem. If you do, please show all work and add comments to the Mathcad solution ..
The rigid bar abcd is supported by a pin at B and restrained by identical steel bars at C and D, each of area 250mm 2 . if the temperature is increased by 8 0 C, find out the force P that will cause the bar at c to be stress-free.
Deflection of a Beam, If a beam of lenght L is fixed at the ends and loaded in the centre of the beam by a point load of F newtons the deflection
Why is the ‘time value of money' important for the evaluation of engineering projects? Provide at least one practical example to support your view (max 2 pages).
Create a MATLAB program and flowchart which will allow the user to input an unknown number of temperatures, each of which might be a temperature in Celsius, Fahrenheit, Kelvin, or Rankine, and will convert the user input temperature to each of the..
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