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A project consists of replacing the track on an existing railroad line, involving 3000 feet of track. The old track can be removed at a rate of 70 feet per hour. The old railroad ties can be removed at a rate of 200 feet (measured along the track) per hour. The new ties can be installed at a rate of 25 feet per hour and the replacement track can be installed at a rate of 40 feet per hour. Show this operation on a linear schedule. Assume that the minimum float for an activity at any location is one day.
An engineer is considering the development of a small wind turbine(D=1.25m) for home applications.The design wind speed is 15mph at T=10 degree celsus and p=0.9 bar.The efficiency of the turbine is n=20%,meaning that 20% of the kinetic energy in the ..
A truck spils 1 gallon of benzene into an aquifer with an area= 50ft^2 Benzene has a solubility of 1750 ppm, and a specific gravity of 0.873. The aquifer ahs a porosity of 0.25, a hydraulic gradient of 0.004 and a hydraulic conductivity of 1000 gpd/f..
Calculate the X, Y and Z coordinates of point B for radial readings taken to B from occupied station A, if the backsight azimuth at A is 25°32'48", the elevation of A = 610.098 m, and hi = 1.45 m
Knowing that each member has a 2 3 4-in. rectangular cross section and that each pin has a 12 -in. diameter, determine the maximum value of the average normal stress (a) in member BE, (b) in member CF.
Water flows uniformly at a depth of y1 = 40 cm in the rectangular troweled concrete channel shown, which is 10 m wide and has a bed slope of So = 0.040 . What is the velocity in the channel before the hydraulic jump
Suppose that in a senior college class of 500 students it is found that 210 smoke, 258 drink alcoholic beverages, 216 eat between meals, 122 smoke and drink alcoholic beverages
Raw primary sludge at a solids concentration of 4% is mixed with waste activated sludge at a solids concentration of 0.5%. The flows are 20 and 24 gal/min, respectively. What is the resulting solids concentration
The truss shown consists of 9 members and is supported by a ball and socket at A, two short links at B, and one short link at G. Check that this truss is a simple truss, that it is completely constrained
The soil properties of the clay are Cc = 0.25, Cr = 0.05, gsat = 18 kN/m 3 , for the sand gsat = 18 kN/m 3 , and the water table is 2 m below the soil surface. Determine the settlements when a stress of 100 kPa is applied by the building over an a..
Undrained shear box tests were carried out on a series of soil specimens with the following results:Total normal stress (kPa) Total shear stress at failure (kPa)
One form of which consists of three equal weights joined by equal length ropes. The gaucho holds on to one weight spinning the bolas overhead. When the bolas is cast the weights cause the configuration to change
At 25 C, approximately what pressure in MPa must be applied to water to reduce its volume by 2%
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