# Re: elevator hoist beam

• To: <seaint(--nospam--at)seaint.org>
• Subject: Re: elevator hoist beam
• From: "Jeng-Wei Li" <jwli(--nospam--at)ms12.hinet.net>
• Date: Mon, 1 Feb 1999 08:10:58 +0800
```I have the same question before, here are the response that I got from the
elevator contractor:
You need two reaction force at the elevator pit: the R5(cage site
reaction),R6(CWT side reaction)

People　                        6     8      9  10   11   12   13     15
17
Cage Weight (kg) 750 780 800 840 870 900 930 1040 1300
Load Weight (kg) 450 550 600 700 750 800 900 1000 1150

Buffer Ramp,S
Speed (m/min)  60   90-105   120      150     180      210     240
Ramp(m) 　 0.102     0.212  0.27   0.425  0.608   0.828  1.081

This is my calculation example:
Reaction force
2.1 Reaction design data
Buffer Type:Actuator
Cage Weifht, Wc=   1300 kg
Buffer Ramp,S=   0.212 m
V=1.4Vd=    2.45  m/sec   ,Vd=design speed
2.2 Cage Side Reaction, R5
W=Wc+Wl=    2450  kg
R5=2W(1+V^2/(2gS))=   11978  kg, g=9.8m/sec2
2.3 CWT Side Reaction, R6
W=Wc+Wl/2=    1875  kg
R6=2W(1+V^2/(2gS))=   9167  kg, g=9.8m/sec2

Hope this will help.

Jeng-Wei Li,SE

----- Original Message -----
From: "Daryl Richardson" <h.d.richardson(--nospam--at)shaw.ca>
To: <seaint(--nospam--at)seaint.org>
Sent: Friday, February 01, 2002 12:50 AM
Subject: Re: elevator hoist beam

> David,
>
> You had better talk to the elevator supplier.  5 kips might be a bit
> light for some elevators.
>
> Regards,
>
> H. Daryl Richardson
>
> >
> > does anyone know of a good design reference for elevator hoist beams?
> >
> > my superior told me to load a simple span beam with a 5 kip point load
> > applied at the middle.  is that about it or is there more involved?
> >
> > tia
> >
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```