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(a) A culvert under a road must be 35m long, have a slope of 0.0035 and carry 4m^3/s. The crown of the roadway is 4.2m above the culvert invert. Assume the outlet will discharge freely. What size of corrugated -metal pipe (CMP: 68mm x13mm corrugation, n=0.025) culvert would you select? Square -edged inlet (Ke=0.5) will be used and coefficient of discharge of cd=0.65. A freeboard of 0.6m will be usedin the design.Head loss due to pipe friction using Manning's n isHf=[(19.63*n^2*L)/R^1.33]V^2/(2g)
L-length of pipe in mR=hydraulic radius (m)N=manning's nV =velocity (m/s)(HINT: Assume HW controlling since TW flow freely, the entrance is submerged,and look at 2 cases-(1) Full pipe flow(2) Not Full pipe flow
(b) A hydrologist made a unit conversion error in his flow estimation. The reported flow rate is now 8m^3/s instead of 4m^3/s. What is your new design? Consider a rounded inlet and outlet design and using smoother concrete pipes or box culverts. For similar cross sectional area, the cost of concrete conduit per unit length is 1.5 times that of the CMP.
Determine the magnitude of which will cause the reaction at the bearing to be equal to zero. The bearings are in proper alignment and exert only force reactions on the rod. Set = 600 .
A concrete mix witha 3-inch slump, w/c rtion of .5, ans sand with a fineness modulus of 2.4 contains 1700 lb/yd^3 of coarse aggregate. compute the required weight of coarse aggregate per cubic yard.
Assume that you have a constant diameter pipe that has no pumps or turbines connected to it.Prove that the fluid in the pipe will flow from a location with high piezometric pressure to one with low piezometric pressure.
A section of highway has a speed-flow relationship of the form "q = au^2 + bu" It is known that at capacity (which is 3100 veh/hr) the space mean speed of traffic is 28mi/hr.
consider a spacecraft that is positioned directly between the earth and moon.the mass of the moon's is approximately 7.35 X10^22 kg, and at the instant under consideration, the moon is 3.8 X 10^8 km from earth.
A motorists inflates the tires of her car to a gauge pressure of 180 kilopascals on a day when the temperature is -8.0 degrees Celsius. When she arrives at her destination, the tire gauge pressure has increased to 245 kilopascals.
a. Find the fraction of the nitrogen that is in the ammonia (NH3) form (and hence strippable) as a function of pH. Include a table AND a graph. b. If the wastewater pH is raised to 10 and the atmospheric ammonia partial pressure
a regular hexagonal pyramid has an upper base edge of 16 ft. and a lower base edge of 28 ft. if the volume of the frustum is 18041 ft^3., find the lateral area of the frustum.
a storage tank has a diameter of 80 ft, a height of 25ft and contains oil to a height of 15ft. the suction pumps, which can handle 15000bbl/d, are started, but the safety valves are clogged and a vacuum is drawn in the tank.
A floor is to be supported on hardwood timber joists that are spaced at 0.5m centres and span 5.0m. The joists support flooring 20mm thick and an applied live load of 2kN/m2 Design a typical joint 50mm wide
A beam that is part of a rigid frame has end moments and mid-span moments for dead, live, and earthquake loads. Determine the governing load combination for both negative and positive moments at the ends and mid-span of the beam.
The bar is fixed at B (length=2a) with a pin support at A (length L=0). Additionally, at A is a torsion spring (spring constant Ca = EI/a) and an extension spring is attached at B (spring constant Cb = EI/(a^3)).
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