A temporary construction elevator is to be designed to
Chapter 17, Problem 17.30(choose chapter or problem)
A temporary construction elevator is to be designed to carry workers and materials to a height of 90 ft. The maximum estimated load to be hoisted is 5000 lbf at a velocity not to exceed 2 ft/s. For minimum sheave diameters and acceleration of 4 ft/s2 , specify the number of ropes required if the 1 2-in plow-steel 6 3 19 hoisting strand is used.
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