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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. the roof is flat and rated to withstand 1.0 oz/sq in. before collapsing. the barometer pressure is 30 in Hg. how long will it takes the tank to collapse? what is the total force on the roof at collapse? how woould more oil in the tank have affected the collapse time? explain.
Draw the shearing force diagram and the moment diagram of the following problem. The beam is indeterminate. You need to integrate the moment twice to get a formula for the deflection v(x).
Assuming a standard driver reaction time of 2.5 seconds, what is the probability that the vehicle pulling out will get in an accident with oncoming traffic?
Use the Bernoulli equation to describe how this manometer can be used to measure the flow rate through the meter.
What is your recommendation for the maximum size of coarse aggregate for the following situation?
A 75g , 30cm--long rod hangs vertically on a frictionless, horizontal axle passing through its center. A 12g ball of clay traveling horizontally at 2.5m/s hits and sticks to the very bottom tip of the rod.
Block D sits freely on the homogeneous bar and experiences a gravitational force of 50N. Homogeneous bar AB experiences a gravitational force of 25 N. What is the force between the bar and block D?
Set up life cycle diagram for both alternatives and calculate net present value (NPT) and annual cost for the life time.
How fast will it be going when it hits the ground?
Determine the force members BC, FC, and FE, and state if the members are in tension or compression.
Base isolation technique has become the method of choice for structural design of buildings and bridges located in highly seismic areas in recent years.
A conical tube of length 8 m fixed vertically with its smaller end upwards. The velocity head and pressure head at upper ends are 1.27 m and 2.50 m respectively. The velocity head and pressure head at lower ends are 0.203 m and 5.407 m respectivel..
For satisfactory operation, the static pressure at the pump inlet must not be lower than -6 m of water gage. Determine the smallest standard commercial pipe that will give the required performance.
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