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Steel beams of wide-flange section W12 x 87 serve as a series of posts. Determine the maximum allowable distributed force per length that can be tolerated prior to buckling. Consider that buckling can occur in either transverse plane. Take the beams to be cantilevered at their base but pinned at the upper end (regardless of the plane of buckling). The spacing between posts is w = 20 ft, and the post length is L = 14 ft. (See Appendix E.)
If a mass of 500kg is placed centrally on the top face of the buoy, find the maximum height of its centre of gravity above the bottom of the buoy so that the buoy may remain in stable equilibrium.
A 10-kg rod is pin connected to its supports and has an angular velocity 2 rad/s (clockwise) when it is in the horizontal position. the length of the rod is 6 m. Determine (a) its angular acceleration and (b) the horizontal reaction force at A.
The object ABC consists of two slender rods welded together at point B. Rod AB has a mass of 1 kg and bar BC has a mass of 2 kg. Knowing the magnitude of the angular velocity of ABC is 10 rad/s when thetha is zero.
A rectangular concrete channel (n=0.015, S_o = 0.005) has a bottom width of 6.0 m and a discharge rate of 25 m^3/s. 1) Compute the normal depth y_n 2) Compute the critical depth y_c 3) Compute the minimum specific energy E_min
Generalize the Kraft inequality, (2.1), to the D-ary case and outline why it is still valid.
Base course aggregate has a target dry density of 119.7 Ib/cu ft in place. It will be laid down and compacted in a rectangular street repair area of 2000 ft by 48 ft by 6 in.
The cylindrical gate of canal headworks, having a diameter of 3m and a length of 6 m, is subjected to water pressure up to its top as shown in the Figure. The gate resisting on the concrete floor of the headworks
Determine the factor of safety against bearing capacity failure. Would the settlement of the base be uniform? Discuss your answer.
Design a circular radial-flow clarifier for a town with a projected population of 45,000. Assume that the wastewater flow is 400 L/capita-day. Size the system for a 2-hr detention time at average flow.
What criteria are used in the selection of personnel for the demonstration of maintenance tasks? Define the criteria for the selection of test and support equipment.
Calculate the percentage of change in total volume with respect to its initial volume when a specimen of this clay is completely dried from a water content of 80%. Assume that the clay remains saturated from liquid limit to shrinkage limit.
Explain how the desert air can contain much more h 2 o vapor in the air than the pole, and still a lower humidity than the pole? what causes the difference between dry and moist lapse rate?
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