Elevator separator beam/ Lift dividing beam

[boobathims]

Dear All
1) Do we need to consider [COLOR=[highlight #CE5C00]fatigue[/highlight][/color] in Elevator separator beam/ Lift dividing beam
2)Do we need to consider [highlight #CE5C00]Impact[/highlight] in Elevator separator beam/ Lift dividing beam
3) Can i get reference book or sample calculation for Elevator dividing beam

Regards
M.S.Boobathi

 

[r13]

I don't know how to design elevator supporting parts, but I think,

1) Yes, you need to find the stress range, anticipated service cycles, then check if there is allowable stress reduction.
2) Yes, this is one very important consideration.
3) No comment (maybe google online).

One reminder, I would like to think the lifting beam design is done with higher safety factor than regular static building components.
Check the standards and regulations, and your boss, if you have one.

 

[JLNJ]

The answers below presume you are working on a simple piston-type passenger elevator.

1. I don’t design for fatigue in the lift beams - these are used just for construction.

2. Yes, of course.

3. If you need a reference for such a simple calculation you need to find someone who can mentor you in person. Otherwise you should not be doing this type of work.

 

[r13]

Yes, if it is not a permanent setup, the fatigue check is not required, but to follow lifting device design standards.

 

[Celt83]

1. separator and divider beams I look at fatigue along with their attachments to the shaft walls. Hoist beam/safety beams are static use so no fatigue on the elements.

2. yes, although the design forces and deflection criteria should be noted on the elevator shop drawing. Some manufacturers provide reactions which already account for impact while others don't if it is not clear reach out and ask them for clarification.

3. once you have the above information follow your standard steel beam design process.

Pay very close attention to the elevator manufacturers deflection criteria this can control above strength requirements in a lot of cases.


My Personal Open Source Structural Applications:

https://github.com/buddyd16/Structural-Engineering

Open Source Structural GitHub Group:

https://github.com/open-struct-engineer