Am planning to build a tree fort for the grand kids in the shape of a
triangle. Side A will be 11' long, side B 10' long and side C about
14' long. Want to use 2 x 10 for these three sides with 2 x 6 on 16"
centers running between side A and C and plywood on top as the floor.
All this will be about 5' off the ground. Are the 2 x10's and 2x6's
adequate or does anything have to be doubled up? Thanks.
Vic
On Jul 7, 10:59=A0pm, Victor <[email protected]> wrote:
> Am planning to build a tree fort for the grand kids in the shape of a
> triangle. Side A will be 11' long, side B 10' long and side C about
> 14' long. Want to use 2 x 10 for these three sides with 2 x 6 on 16"
> centers running between side A and C and plywood on top as the floor.
> All this will be about 5' off the ground. Are the 2 x10's and 2x6's
> adequate or does anything have to be doubled up? Thanks.
>
> Vic
Why not see for yourself. Using the defaults with southern yellow,
10' calls for 2x8s.
http://www.awc.org/calculators/span/reversecalc/reversecalc.asp
I would suggest you consider something other than plywood for the
floor. Even PT plywood will come apart espescially if you live where
it snows.
The center may be a little bouncy, but that just adds to the fun.
Art
"Victor" <[email protected]> wrote in message
news:[email protected]...
> Am planning to build a tree fort for the grand kids in the shape of a
> triangle. Side A will be 11' long, side B 10' long and side C about
> 14' long. Want to use 2 x 10 for these three sides with 2 x 6 on 16"
> centers running between side A and C and plywood on top as the floor.
> All this will be about 5' off the ground. Are the 2 x10's and 2x6's
> adequate or does anything have to be doubled up? Thanks.
>
> Vic
Why not see for yourself. Using the defaults with southern yellow,
10' calls for 2x8s.
http://www.awc.org/calculators/span/reversecalc/reversecalc.asp
The defaults include 40 lbs/sf live load... (around here that's the
requirement for a 1st floor residence) That's a bit conservative for a tree
house. 30 lbs/sf is called for in the second story... a better match but
still probably conservative for a tree house. At 30, a 2x6 works.
-Steve
** Posted from http://www.teranews.com **
Artemus wrote:
[...top posting repaired...]
> "Victor" <[email protected]> wrote in message
> news:[email protected]...
>> Am planning to build a tree fort for the grand kids in the shape of a
>> triangle. Side A will be 11' long, side B 10' long and side C about
>> 14' long. Want to use 2 x 10 for these three sides with 2 x 6 on 16"
>> centers running between side A and C and plywood on top as the floor.
>> All this will be about 5' off the ground. Are the 2 x10's and 2x6's
>> adequate or does anything have to be doubled up? Thanks.
> The center may be a little bouncy, but that just adds to the fun.
...
If could arrange to run intermediates other direction would be somewhat
stiffer.
Any intermediate support(s)?
How big/many grandkids (plus neighboring, etc.?) will be likely at any
given time?
It'll hold quite a lot, be sure to use adequate connection details, of
course.
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