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A steel rod with a diameter of 12 mm is made of high-strength steel alloy with a shear modulus of 80 GPa. The rod is subjected to torque T. What is the minimum required length L of the rod so that the cross section at one end can be rotated 90 degree with respect to other end without exceeding the allowable shear stress of 300 MPa
the maximum degree of curvature can be at most 6.0 and the superelevation can be at most +6.0%. Design the ramp for the highest horizontal curve design speed given the constraints.
THE VERTICAL ANGLES WERE READ AT BOTH ENDS OF THELINE AND THEN AVERAGED USING A CO-AXIAL THEODOLITE/EDM COMBINATION.IF THE ELEVATION OF THE INSTRUMENT STATION IS 630.15 FT
Two vessels are connected to a differential manometer using mercury (s=13.56), the connecting tubing being filled with water. The higher-pressure vessel is 5 ft lower in elevation than the other
A canal was constructed running parallel to a river 1500 ft away. Both fully penetrate a sand aquifer with a hydraulic conductivity of 1.2 ft/d. The area is subject to rainfall of 1.8 ft/y and evaporation of 1.3 ft/y.
Describe the equation for charging a water tank. Use: H= 2m, A_s = 1m^2, density water = 1000kg/m^3, K = 2000kg hr^-1 Mass flow in = K t. Calculate how long will it take to charge completely the tank
A four year financial project has net cash flows of $20,000; $25,000; $30,000; and $50,000 in the next four years. It will cost $75,000 to implement the project. If required rate of return is 20%, conduct a discounted cashflow calculation
A one-story, 50-m wide X 90-m long manufacturing building is to be built on a site underlain by medium dense to dense silty sand with occasional gravel. This soil probably has better than-average engineering properties and average uniformity.
if 25 acres of land recieved 3.5 inches of water from the irrigation district, determine volume of water on the land in acre-ft
A typical energy of a laser pulse from such lasers is 1 mJ. Suppose that energy is uniformly distributed over the laser spot, and the effect is constant during the pulse (a square pulse).
The beams support one-way slabs, 6 inches thick that span 20 feet center to center. Assume that the beams are 16 inches wide and 24 inches deep. Determine the dead load in pounds per linear foot for the beams, from the concrete structure alone.
In the determination of the average velocity of flow in wide rivers, it is common practice to estimate the average velocity in a vertical section by making a single measurement at a distance below
If the force is removed when the crate reaches point B, and the crate is then released from rest, determine the crates's velocity when it slides back down the plane and reaches point A.
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