The system could work if properly detailed, however heavy steel and timber
systems typically do not mix. Next, a 24-foot span is really long,
therefore I assume you plan on properly bracing the beam along it's length.
You'll need to know the maximum live load (dynamic loads are caused by wind
and seismic, not transient loads such as motors and the like) you expect to
lift. I've been a practicing engineer for over 15 years and teach the stuff
now. Given the consequences of failure (based on the size of your steel
beam), I'd suggest you talk to a real live engineer to size the supports and
more importantly, the bracing (isn't it worth the $100 or $200 to have a
structural engineer size the system out for you?). Lastly, this may sound
conservative, but I'd question any engineering that is offered over the
internet for your application. Remember, safety first.
Allen in Seattle
'50 3100
----- Original Message -----
From: "Terry Beynon" <tbeynon@dsl.telocity.com>
To: "Nelson, Jeff - DTC" <jnelson@paducah.k12.ky.us>;
<oletrucks@autox.team.net>
Sent: June 05, 2000 12:49 PM
Subject: Re: [oletrucks] Shop Hoist Engineering Question
In one of my past lives, I had something to do with engineering (piping
design). My structural experience had to do with hanging the pipe. IMHO
"pole barn" and a 24 foot I-beam don't go together. That's going to be one
meaty wide flange to span 24 feet AND carry a hoist plus dynamic load.
Unless there is a structural engineer out there, I'll check with a friend to
see what you need for additional support and the size of the beam. It may be
that the weight and the cost will scale your plans down a bit.
Terry Beynon
'55-1 3100
'51 Suburban
Chicago IL
----- Original Message -----
From: "Nelson, Jeff - DTC" <jnelson@paducah.k12.ky.us>
To: <oletrucks@autox.team.net>
Sent: Monday, June 05, 2000 12:57 PM
Subject: [oletrucks] Shop Hoist Engineering Question
> I am in the process of designing my garage/shop which I am finally going
to
> build this summer. It will be 24' deep and 32' wide, with three bays and
> three 9' roll up garage doors. I am probably going to be building it as a
> pole barn type construction. I am thinking that I would like to engineer
it
> so that I have a steel I-beam running the full 24' depth down the middle
of
> the third bay so that I could support an overhead, rolling, 2 or 3 ton
chain
> hoist (I've put a copy of my draft floor plan on the web at
> http://www.chevytrucks.org/users/jeff/garage/garage_frame.htm if you are
> having trouble visualizing this.)
>
> I'd appreciate any input from others who have put overhead hoists in
shops.
> Any thoughts on engineering and construction details would be greatly
> appreciated. For example, could I just set the I-beam on top of the double
> 2"x12" wooden header that spans the 9' garage door opening, or will I need
a
> steel header?
>
> TIA
> Jeff Nelson
> 1953 3600
> Paducah, KY
> http://www.chevytrucks.org/users/jeff/
>
> oletrucks is devoted to Chevy and GM trucks built between 1941 and 1959
>
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