8.111 The flowrate between Tank A and Tank B shown is to be increased by 30% (i.e., from Q to 1.30Q) by the addition of a second pipe indicated by the dotted lines running from Node C to Tank B. If the elevation of the waterline in Tank A is 25 ft above the waterline of Tank B, determine the diameter D of this new pipe in feet. Neglect minor losses and assume the friction factor in each pipe is f = 0.02. A 6-in. diameter; 600 ft long C 6-in. diameter; 500 ft long Diameter D, 500 ft long B 8.111-a Convert the pipe diameter found in 8.111 into inches. Assuming that available pipe diameters are 4, 6, 8, 10, or 12 inches. What pipe diameter do you recommend?

solve all parts. show all steps/solutions. show equations for shear and moment diagrams

Steiner’s theorem and gyration radius. A metal tank wheel in the shape of a disc of radius R is lightened by cutting out six identical through- holes in the shape of discs, whose axes are parallel to the wheel’s axis of rotation, and whose radii are all r. The holes’ centers are positioned at the vertices of a regular hexagon of side A, with the wheel’s axis passing through the center of the hexagon. By what percentage is the wheel’s moment of inertia decreased around its rotation axis, as a result of the cut outs, for r=R/5 and A=3R/5? Is the solution: 18.24% (using negative mass for cutouts and parallel axis theorem)?

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