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Elevator Rail Deflection Requirements

Elevator Rail Deflection Requirements

Elevator Rail Deflection Requirements

I am in the process of designing a elevator that is steel framed with metal studs. I need to provide rail support for the car as it travels up and down the elevator shaft. Loads are provided by the manufacturer for me to design my rails (simple enough). I am looking for some guidance as to what allowable deflection would be for these rails. I seem to remember a figure of H/1000 but I can't seem to find anything on the elevator shop drawings. Is H/1000 correct?

RE: Elevator Rail Deflection Requirements

I don't know if it's the latest version, but Google "ASME A17.1-2007/CSA B44-07". (I was able to find several free downloads on the first few hits.)

They have deflection requirements in there.

RE: Elevator Rail Deflection Requirements


"Allowable deflections for rail supports as required by the elevator code are 1/8-inch under normal loading and ¼-inch maximum with seismic activity."

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