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A hopper having a mass of 2250 kg is designed to hold a bulk load of salt having a mass of 9250 kg. The hopper is to be suspended by four rectangular straps, each orientated 20 degrees from the vertical and each carrying one fourth of the load from the hopper+salt. Steel plate, with a thickness of 12 mm is to be used to make the straps. What should the minimum width of the straps be in order to limit the stress to 120 MPa, whereby straps are available in increments of 5 mm widths.
Find the absolute value of the magnitude of force vector B if the resultant force= 1000 lb, force vector A= 1000 lb, and the resultant forms a 45 degree angle with B, and vector B runs parallel to the y axis.
How much (in addition to your trade-in value) can you afford to spend for a car averaging 30 mpg You expect to drive 15,000 mile/year and expect gasoline to cost $4.00/gallon and you will keep he car 10 years. Your personal interest rate is 6%/yea..
Compute the design strengths of a rectangular beam with bw=15 in, d = 36 in, d'=2.5 in, fy= 60ksi, fc'=4ksi, and at the top of the beam are 4 #8 bars, the bottom has two rows of 4 #10 beams
Design a concrete column of 14 ft high to support a dead load of 80 kips and a live load of 200 kips? f'c= 6,000 psi fy= 60,000 psi
Discuss the merits of the owner's third-party special inspector performing the laboratory testing for the decontamination system discharge water.
0.1 moles of an ideal gas contained in a piston-cylinder assembly undergoes the heat pump cycle shown below. The cycle operates counter-clockwise. Evaluate the coefficient of performance.
A 1.20-m thick strata of sand has a void ratio of 1.81. A contractor passes a vibratory roller over this extra strata, which densifies it and reduces its void ratio to 1.23. Compute its new thickness.
The level of water in a city water tower is 125ft. above the ground. The tank is kept with an air space which can be pressurized with compressed air. It is important to maintain a pressure at the bottom of the tower at 75 psig
Suppose a family of four, living in a home with an area of 100x50ft connects its stormwater drain to the sewer. Assume that 1in of rain falls over 1 day
A first-order reaction that results in the destruction of a pollutant has a rate constant of 0.1/day. (a) How many days will it take for 90 per- cent of the chemical to be destroyed (b) How long will it take for 99 percent of the chemical to be destr..
The bars AB and BC of the structure are each of length L and weigh W and 2W, respectively. Find the tension in cable DE in terms of W, L, and the angle θ.
Write out the final version of Hooke's Law which includes Young's Modulus. Draw the idealized Stress-Strain diagram for a material. On the drawing, please label: the yield stress, the plastic deformation, and the yield strain.
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