I had been working with an engineer on this project on and off for the past 2 years, but I can no longer get in touch with him. I have an elevator machine which is mounted to a structural steel frame that sits atop four (4) T shaped rails. The rails extend from the top of the elevator shaft to the pit floor at the base of the shaft. The rails are braced approximately every 10 to 12 feet to the building structure.
What I want to know is the reactions of the machine frame at the top of each rail stack and what forces the individual rails see and also, do you see a maximum height of the rails from the pit floor. As the rails are effectively acting as columns, I would like to know what your analysis and conclusions are. I know of some elevator manufacturers that will offer their rail-supported machines up to 15 stories or 150 feet, but I want to feel certain. I would also want to know what the maximum bracket spacing should be.
Please note that the rails would also see a downward force applied should there be a safety application. This downward force would be 9,188 lbs per car guide rail (there is one on each side of the elevator platform) upon activation of the safety mechanism. The counterweight guide rails would not see this load.
Please do not hesitate to contact me at 732-803-6010 with any questions.
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