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Bridge Assignment
Dr. Owalabi briefly discussed the 1-85 collapse that happened in the metro Atlanta area back in March. Please response to the questions regarding that incident below:
Q1. Why did it Collapse?
Q2. What type of structure is this?
Q3. What type of foundation of stone and gravel in Atlanta, Georgia?
Q4. What was the engineering cause of the collapse?
Q5. Suggest mitigative measures?
A single screw extruder is being used to process pregelatinized starch. The screw dimensions are as follows: channel width 3 cm, channel height 0.5 cm and screw length 50 cm. The wall velocity is estimated to be 0.31 m/s.
A 50 meter wide rectangular channel is carrying a flow of 250 m3/s at a flow depth of 5 meters. To produce critical flow in this channel, determine a.) the height of the step in the channel botom if the width remains constant.
A well-insulated rigid vessel of volume 0.2 m^3 is divided into two equal compartments by thin diaphragm, as illustrated in the accompanying figure. One of the compartments is a vacuum
The relative density of a sloped sand deposit is known to be 75%. Water is observed to be seeped through this slope at a rate such that the discharge velocity is 0.6 m/day. If the hydraulic conductivity for this deposit is 4×10-4 m/s.
the turbopump unit in the engine nominally operates at 7000 rpm, and a result of design issue, the actual thrust provided by the engine oscillates harmonically with an amplitude of 10 KN at the same rotational frequency as the turbopump unit.
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
Past experience indicates that the time for high school seniors to complete a standardized test is normal random variable with a mean of 35 minutes.
The water pressure in the municipal pipeline is 450 kPa, the sum of the local loss coefficients in the building pipes is 11.0, and the flow to be delivered to the top floor at 25 L/s through a 150-mm diameter PVC pipe.
In prolonging a line by plunging the telescope between backsight and foresight, but not double centering, what angular error is introduced?
A distance of 200 ft must be taped in a manner to ensure a standard deviation smaller than ± 0.03 ft. What must be the standard deviation per 100 ft tape length to achieve the desired precision?
Saturated liquid water at 1.0 MPa is throttled adiabatically to a pressure of 0.4 MPa. If the change is kinetic energy is negligible, what percentage of the water evaporates during this throttling process?
a spherical balloon inflated sos that the volume is increasing at the rate of cubic meter/min. At what rate is the diameter increasing when the diameter is 12 m?
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