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1.You have been asked to design a hoisting system and a demolition catch system for the superstructure of a bridge that you are removing. Discuss in detail the steps you would take in order to be able to provide the necessary information for these designs so that construction can commence.
2.Construction dewatering plays are very large role in the todays construction arena. Discuss the role water conditions plays in the planning and design of a temporary earth support system.
3.Battered piles are used on many construction projects as a permanent part of the element being constructed. Does this construction method have any play in the construction of a temporary earth retention system?
A 0.20 kg stone attached to a 0.8 m long string is rotated in a horizontal plane. The string makes an angle of 25° with the horizontal. Determine the speed of the stone.
what should be the minimum radius of curvature p for the track at B so that the passengers do not experience a normal force greater than kmg?neglect the size of the car and passengers.Take k=4
List the advantages and disadvantages of the following alternative fuels: ethanol, methanol, biodiesel, compressed natural gas, and liquid petroleum gas.
Water flows from a large open tank through a sharp edged entrance and into a galvanized iron pipe of a length 1.5 miles and diameter of 4 inches. The water exits the pipe as a free jet at a distance
In oder to erect a perpendicular to a line bythe method inducate in figure the distance bc is equal to 40 ft. when the zero mark of a 100-ft tape is held a point B and
The acceleration of a particle is defined by the relation a=-8m/s^2. Knowing that x=20m when t=4s and that x=4m when v=16m/s, determine (a) the time when the velocity is zero
Calculate and compare the ozone concentration in ug/m^3 for a polluted day in Mexico City (210 ppbv ozone, 30 C, 0.77 atmospheres pressure) and the ozone concentration in the stratosphere (8 ppmv ozone at 30 km).
two identical spheres of radius 8 in and weighing 2 lb on the surface of the earth are placed in contact. find the gravitational attraction between them.
A circular plate is loaded with a total load of 60 kips distributed uniformly over the surface at a pressure of 100 psi. Calculate the vertical stress at every combination of the following: (a) Depth: 12 and 50 (b) Radial distance from the center ..
A municipality uses green energy and treats 15 × 106 gal/day of a groundwater containing the following: CO2 = 17.6 mg/L, Ca2+ = 80 mg/L, Mg2+ = 48.8 mg/L, Na+ = 23 mg/L, Alk(HCO3-) = 270 mg/L as CaCO3, SO42- = 125 mg/L, Cl- = 35 mg/L.
At point 1 and point 2, it is also measured that dv1/dt = 20 m/s^2 and dv2/dt = 50 m/s^2 respectively. Determine the local acceleration, the convective acceleration, and the total acceleration at point 1 and 2 at t = 0
Emissions of heat-trapping carbon dioxide (CO2) reached an all-time high of 31.6 gigatons in 2011, a 3.2% increase over 2010. The International Energy Agency said this further reduces the chance that the world can avoid a dangerous rise
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