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A divided multilane highway in a recreational area (fp = 0.90) has four lanes (two lanes in each direction) and is on rolling terrain. The highway has 10-ft lanes with a 6-ft right-side shoulder and a 3-fl left-side shoulder. The posted speed is 50 mi/h. Formerly, there were 4 access points per mile, but recent development has increased the number or access points to 12 per mile. Before the development, the peak-hour factor was 0.95 and the directional hourly volume was 2300 vehicles with 10% large trucks and buses and 3% recreational vehicles. After the development, the peak-hour directional flow is 2700 vehicles with the same vehicle percentages and peak-hour factor. What is the level of service before and after the development?
One method of removing phosphate from wastewater effluents is to precipitate it with aluminum sulfate. A plausible stoichiometry (but not exact because aluminum and phosphate can form many different chemical materials) is
A cylinder of rock with a Poisson's ratio of 0.422 has ano-load length equal to 17.6 cm and a no-load diameter of 6.20cm. Under an axial compressive load the axial strain is foundto be -3.44 mm/m.
The acceleration of a particle along a straight line is defined by a=(2t-9)m/s^2, where t is in seconds.At t=0, s=1m, and v=10 m/s. When t=9s, determine the particles position, the total distance traveled, and the velocity.
two solid rods AB and BC are welded together at B and loaded as shown. Knowing that d1=50mm and d2=30mm, find average normal stress at the midsection of rod AB and rod BC.
A piston-cylinder device contains 0.85 kg R-134a at 263K. The piston is free to move and has a mass of 12 kg and diameter of 25 cm. The atmospheric pressure is 98 kPa. Heat is added to the cylinder until the R-134 temperature = 10 o C.
The 90-lb boy and 75-lb girl wald towards eachother with constant speed on a 330-lb cart with frictionless wheels. assume that the cart was at rest befor the boy and girl start walking.
What would the height of a water tower with a 500 gallon tank have to be, to bring water ( by gravity ) from sealevel over a distance of 2.5miles with an elevation of 300ft?
If the Greenshields model describes the relationship between speed and density on the highway, the jam density of the highway is 112 veh/mi, and the mean free speed is 64.5 mph,
Assume that the design temperature and residence time have been established as 1300 degrees F and 0.6 seconds, respectively. The type of burner used in the process requires outside air at a mass ratio of 12:1 (air to fuel gas).
a water of 20 c temprature pupped at 75 kpa to a perforated pipe 5 cm dia. contain 10 hole with the same diameter. the distance between two adjacent hole is 20 cm. what is the discharge of each hole
Draw the flow net for the steady state seepage flow which occurs under this wall. From the flow net determine the distribution of water pressure on the side AB of the wall and then find the resultant force (per metre run into the page) exerted by ..
Given computer-generated direction field. Then sketch, by hand, an approximate solution curve that passes through each of the indicated points. Use different colored pencils for each solution curve.
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