Elevator Hoist Beam and Pit Design

[tdawgye]

Hi There,

How you design elevator hoist beams? Do you only take into consideration just the car and passenger weight, or both plus the counter weight?

How do you design elevator pits? Do you only consider the buffer impact load plus the static load of the car, or both plus the vertical loads under guide rails?

Thanks, I appreciate any help.

 

[structSU10]

Generally that information is provided by the elevator manufacturer. They describe the loading and deflection criteria you must use to design.

In general the hoist beam is only used to set the car, and is usually designed for 5000# +/- depending on manufacturer.

they usually describe the loading at the buffers as well.

 

[spieng89]

x2 on structSU10 response. This load should be supplied by the elevator manufacturer. I typically assume 10 kips if a manufacturer hasn't been selected yet, with most loads falling between 5 kips and 10 kips.

The beam is only used during install, not for operation by end user.