[pure-silver] Re: floor vibration?

Well for a vibration to be transmitted, something has to move for it to 
vibrate.  I understand you to be talking about a small vent fan.  Yes it might 
create some small vibrations, but I would seriously doubt if would be of a 
great enough force to be an issue if all your framing is rock solid.  Framing 
is simple, but very effective.  If its anchored to a solid foundation, it would 
difficult difficult to transmit any of it to the floor.  The drywall between 
the studs likely serve as a slight dampener anyway.  

All the weight on the framing and the studs also would reduce the likelyhood of 
any problem.  Some rubber pads under the legs might isolated it if its a 
problem, but it could also introduce more vibrations.  No don't go with the 
really oddball solution and cut holes in the floor for the table.  That opens 
up tons of issues that I the original poster was half joking.  I have a full 
proof and easier solution.

You vent fan should be wired on a separate switch.  Just reach over and flip it 
off long enough to expose the paper, then switch it back on again.  It can't 
vibrate if it isn't on and the short time its off shouldn't be an issue with 
the air.  But with solid framing and a good install with the drywall I doubt 
you will have any problem at all.


--- On Mon, 9/29/08, Shannon Stoney <shannonstoney@xxxxxxxxxxxxxxx> wrote:

> From: Shannon Stoney <shannonstoney@xxxxxxxxxxxxxxx>
> Subject: [pure-silver] floor vibration?
> To: pure-silver@xxxxxxxxxxxxx
> Date: Monday, September 29, 2008, 4:06 PM
> I have a question about the new darkroom that I'm
> building in a garage 
> in my back yard.
> 
> My old darkroom was a box inside a garage.  The floor was a
> concrete 
> slab.
> 
>   In the new darkroom, we had a wooden floor built on top
> of the slab, 
> because the slab was so uneven.  The walls are now tied in
> with the 
> floor, and there is a vent hood mounted on one wall, with a
> fan on a 
> shelf next to the hood to pull air through the vent hood. 
> In the old 
> darkroom, the vibration from the fan vibrated the wall, but
> not the 
> enlarger, because the enlarger sat on a table on the
> concrete slab.
> 
> Today I suddenly got worried that the vibration from the
> vent fan on 
> the vent hood over the sink would vibrate the floor,
> because now the 
> floor is tied in with the wall.  Then if the floor
> vibrates, the table 
> that the enlarger sits on might vibrate also.
> 
> So, what should I do to prevent this from happening?
> 
> --shannon
> 
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