Can I span 17' 4" with 2x6's, 16 oc, ceiling w/drywall, insulation, no attic
storage? I wanna remove a wall that is within this span. It looks like 2 or
3 joists(?) already span this distance in line with the doorway.
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yes as long as you nail (not screws) 2x4's from the ceiling joist to the
rafters creating a truss.
otherwise that would require 2x10 ceiling joists for a 17' 4" span 16" on
On Wed, 25 Jun 2003 21:24:21 GMT, email@example.com (Renata)
Crack maybe, not fall as long as it meets code. As long as the drywall
is properly attached, nothing can fall unless the beams drop.
But, FWIW, don't do it even if it meets code. You have to do all
the 2x "truss" work to make it stable enough to not crack. That
takes a lot of time. It also makes the "attic" space nearly unusable
and inaccessible, even for running HVAC and wiring. Spend a couple
of bucks more and at least put 2x8's in.
Also, ask the building inspector. If he doesn't like it, it doesn't
matter what anyone here thinks.
According to a span calculation program some grades of some species can do
it. I'm not sure if the 10# live 5# dead loads they used is enough for the
1+ ft of insulation. For no. 2 southern pine, 16"oc, L/240, the software
said 17' 8". Don't know if I can identify the wood that's up there.
On Mon, 30 Jun 2003 14:39:18 GMT, firstname.lastname@example.org (Renata)
I don't disagree with you Renata that the current code would not
allow a 2x6. The question was about his *existing* structure which
apparently does use a 2x6.
I'll still stand by my advice that whether it met the code or not,
whether that wall was considered supporting or not, removing the
wall would not be the best idea.
I wasn't going to reply, but some clarification is in order.
Building code is a _minimum_ standard.
But, Building Code ISN'T the issue here.
Those tables aren't suggestions - if they "state" that a 2x6 CAN"T
span 17' it means that it will fail in some fashion if you try to span
17' with a 2x6. While the failure may not be a collapse, the ceiling
sure ain't gonna be looking good.
This seems to indicate that the wall in the middle is indeed load
bearing. (Yo - OP - do those joists overlap each other over that wall
On 6/25 @ 7:07pm, you (Bob) stated
"There's a good chance that wall is not "formally" load bearing and
that your house met the code way back when. Still, it is no doubt
stabilizing the rafters and keeping your ceiling from cracking under
My point is that code is actually irrelevant here, as far as it goes.
If you don't shore up those 2x6 joists (by sistering 2x8s, for
example) and do remove the center wall, you're going to have problems.
On 6/28 you stated
"If the 2x6's are "ties", then they are stressed horizontally and
not set up to handle a top load, just the weight of the
drywall below. It probably is not a good idea, probably does not
meet code today, probably did when it was built. "
The span table I posted was for ceiling joists, no load in attic space
Probably never met code (unless they were true "2" x "6" maybe),
probably never works, forget it.
Perhaps you should take a few structures and building classes before
making such definitive statements.
I apologize for not being the most diplomatic, but folks who haven't a
clue about what they're talking, and haven't a clue that they really
haven't a clue, and insistandinsist that they're right, well, at that
point, I tend to lose patience.
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