Re: Hole Diameter for running cable

["Robert Green" <ROBERT_GREEN1963@xxxxxxxxx>]

Too late now re: Hayden!  It's do or die time.  The joists aren't even close
to 10"  -  they are 8" of green, knotty, splitting WWII ration-book lumber.
Bracing will take me a couple of hours extra, at most.

--
Bobby G.


"Robert L Bass" <sales@xxxxxxxxxxxxxxxxxxxxx> wrote in message
news:1164834742.679565.249210@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
>> I cannot imagine needing 2 inch holes to run
>> these sorts of wires in a home.  I'm assuming
>> that these holes are in the floor joists in the
>> ground floor, meaning it is the unfinished
>> ceiling of the basement.
>
> In my case yes, we stripped out the old
> suspended ceilings and moldy plywood
> nailed up without vapor barriers or lots of
> other good things.

You don't need to restore the joist strength for 2" holes.  Just keep
them away from the center 1/3 of the joist and at least 2" apart from
each other.  Also, stay near the vertical center of the joists.

> I am installing a new Hayden central vacuum...

Beware.  Hayden can sometimes be a royal pain when you need repair
parts or warranty service.  We dropped them after a couple of
run-arounds.

> avoid the main house beam) and the vacuum
> pipe is 2" in diameter.  Something in my gut
> tells me to brace any hole that large in an old
> wooden joist....

If the joist isn't otherwise damaged, ignore the gut feeling this time.
 2" isn't a large hole in a typical (10" or larger) floor joist.

> I've always wondered why something as important
> as building codes are not available on-line...

Many communities now post the IRC code online.  Google a question such
as "what is the maximum hole diameter in a floor joist" and you'll get
a lot of opinions plus several municipal code websites with the
standards.

--

Regards,
Robert L Bass

=============================>
Bass Home Electronics
941-866-1100
4883 Fallcrest Circle
Sarasota · Florida · 34233
http://www.bassburglaralarms.com
=============================>