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a) Zinc is often used as a coating on steel reinforcement. Explain two ways in which the zinc coating can protect the reinforcement. What would happen if the coating was nicked.
b) Compare the effectiveness of the zinc coating with a typical epoxy coating on reinforcement. How does the epoxy coating protect reinforcement and what happens if the coating is nicked.
Compute the motor size required to pump 28.3 cms through a 3,050 m long, 3.66 m diameter pipeline to an upper reservoir 610 m above the lower reservoir. Use a friction facter of 0.02 and a pump efficiency of 80 percent.
A bullet is fired from a height of 150m at a velocity of 300kmph at an angle of 35 upward. Neglecting air resistance. Find: a) total time of flight b) horizontal range
Soil is excavated from a borrow to construct an embankment with a net volume of 50,000 cy with 95% of Modified Proctor maximum dry density of 110 pcf with a Modified Proctor optimum water content of 8%.
The Metrodome's inflatable roof covers 10.0 acres and its interior volume is 60.0x103 cubic feet. During construction, 40.0x103cubic yards of concrete, 11.9x103 tons of reinforcing steel, and 5.00x102 tons of structural steel were utilized.
Explain how the different physical characteristics and moisture content of soil lead to the different angles of repose, swell, and shrinkage factors. Explain how these factors affect excavation operations and costs.
The cost of a 100,000 bbl/d ethanol unit is $40,000,000. From historical records, the capacity exponent ratio for CCR is 0.75. Estimate the cost of a similar ethanol unit with a capacity of 135,000 bbl/d.
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.
Two 52 kN loads are maintained 2.5 m apart as they are moved slowly across beam AB. Write a computer program to calculate the deflection at the midpoint C of the beam for values of x from 0 to 9 m, using .5 m increments.
The probability is 1% that an electrical connector that is kept dry fails during the warranty period of a portable computer. If the connector is ever wet, the probability of a failure during the warranty period is 5%.
If an additional 11-ft lane is added (each direction) and all other factors stay the same, what will be the new level of service?
an operator is holding a tool for a horizontal drilling task. the woman's elbow is flexed 45 degrees. The length of her forearm is 0.4m and the drill has mass of 5kg. Her forearm/hand weighs 20N and its center of mass
A closed storage building is located on open flat terrain in central ohio. If the side wall of the building is 20ft high, determine the external wind pressure acting on the windward and leeward walls. Each wall is 60ft long.
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