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A tow truck is searching a city street at 30 mi/h for illegally parked vehicles. It travels over an equal tangent vertical curve with an initial grade of +3.5% and final grade of -4.0%. If the height of the drivers eye is 6.0ft and the driver spots a car 450ft away with a height of 5.0ft, what is the minimum length of the vertical curve?
Given for a simple curve: R = 500 ft, I = 58º08'40" and the station of the PI is 38+17.25. Set up the field notes for staking out the curve with deflection angles and incremental chords.
There are no interchanges in the vicinity of this freeway segment. If the peak-hour factor is .90 and all of the drivers are regular users, what is the level of the service of this compound-grade freeway segment?
A steel bar of length 30 inches and circular cross section whose diameter varies linearly from 0.50 inches at one end to 0.75 inches at the other is subjected to an axial tensile force of 4.5 kip. Find the change in length of the bar.
List some of the common sources of sulphate ions in natural and industrial environments. For a given sulfate concentration, explain which of the following solutions would be the most deleterious and which would be the least deleterious to a permea..
We are analysing energy efficiency of four different cars, A (3.2 miles/kwh), B (42 mpg using Clean Diesel), C (22 mpg using corn based ethanol E85), and D (28 mpg using regular gasoline). Now accounting for all of the energy used, including extra..
Plot the variation with depth (z) of the at-rest lateral earth pressure behind the wall, and determine the magnitude and location of the at-rest lateral earth force per unit length of wall.
A wastewater sample was diluted by turbidity free water; 5ml was diluted to 250 ml. Turbidity of the diluted sample was 2.3 NTU, what is the turbidity of the original sample
The steam flow rate entering the pipe is 2500kg/hr. Due to heat loss from the pipe to the surrounding air (at 25 C) 20 kg/hr of condensate is formed in the pipe and removed at the end of the pipe.
given that E for the tube material is 70 GN/m2 and the stool legs are 75cm long, how much will each leg shorten under the applied compressive load (take g = 9.8m/s2)
Influent sample collected from a wastewater treatment plant was analyzed for various solids concentrations. Results indicated concentrations of Total Volatile Solids (TVS)
Suppose that a water treatment plant has a Parshall Flume with a 4 ft wide throat. a) If the upstream depth of the water (ha) is 1 ft and the depth of the water in the throat section (hb) is 0.65 ft, what is the flow rate in gpm
A vertical curve is to connect two tangents that intersect at station 30+50 at an elevation of 800.00 ft. The approach gradient is 3 percent and the departure gradient is -5 percent. The elevation of the curve at station 32+50 must be equal to at ..
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