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Posted by dpb on October 19, 2006, 10:06 am
I had posted earlier but stoopid google-groups seems to have failed so
will make the comment again...
I had suggested I'd stick w/ the 2x10 but hadn't noticed the mid-point
additional support so agree with that a 2x8 is sufficient.
What I would add is that at least in a significant part of the country
trying to get a 16-ft 2x8 in Doug Fir would be like buying the
equivalent in FAS hardwood for pricing if could get it at all. For the
purpose, I'd probably just go P-T for the extra protection from
moisture and chewy critters at what would probably be half the cost or
less. (I tried to get some Doug Fir 1x for some restoration work here
to match some existing work and the local 'yard counter flunkies said
"Fur? What's that? -- Oh? Never heard of it." :( )
Steve Barker LT wrote:
> thanks for the reply. that's kind of the way I was thinking.
>
> --
> Steve Barker
>
>
> > 2x8 habitually spans 12 feet so with support in the middle and with points
> > of inflection out from the center support, you have only about 5 - 6 foot
> > of span. So, sure.
> >
> >> I'm replacing the lower level floor joists in a 135 yr
> >> old farm house. Basically sitting 6" off the ground on a
> >> rock foundation. The current joists (what's left of them)
> >> are rough oak 2x10 on 24" centers. Length = 15.5'. If I
> >> go to 16" centers and support them in the middle, would a
> >> 2x8 Douglas Fir be sufficient, or should I stay with the
> >> 2x10? Flooring will be underlayment then 1x6 pine
> >> planking. (similar to original)
> >> THANKS,
> >> --
> >> Steve Barker
> >
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