First time here and I am hoping someone can help me with my issue.
I have been planning platforms for the past couple weeks for the kids and am starting with the most basic one.
Rough sketch is attached below..not exactly to scale.
I know the basics and have some prior training building. I am NOT a math head and that is my weakness.
Dimensions are 8' x 16'. See diagrams for more specifics. Roughly about 6' off the ground. Two trees with 1' diameter.
I have two different designs for this making a platform, the main concern is the 8' span between trees. I need it to support an active weight of say 500lb around the middle. 2 Adult + 2 kids
I know traditional route is 2 beams parallel to the trees, however I am concerned the one tree is leaning a bit. I might not be able to make it a straight line, it may be over 5 degrees, perhaps 10.
In the first design I have:
2 beams 2x8x16 - Joists are 2x6x8
Hence build number 2 going with 4 horizontal beams and following up with 16' joists. The main question dogging me, will plan number 2 work.
4 beams are 2x8x8 - Joists are 2x6x16
Douglas Fir #2 Kiln Dried for all structure.
Plan on spacing joists 16" apart.
Traditional V support on each tree.
3/4 8" Hot Dipped Galv Lag Screws
3/4 10" HDG Lags for the V's
galvanized joist hangers
galvanized rafter ties
Was planning on using 1 x 6 x 8 boards for the deck across.
Not sure what wood to use, this is the most expensive part.
Options I have been thinking about.
T1-11 Plywood or OSB floorboard.
Whitewood Common / 1" doug fir boards, treated with wood sealer / preservatives.
Redwood / cypress is out of my price range, wife is allergic to cedar.
I am open to ANY and all suggestions.
Trying to keep this under 300-400.
I do not have the budget for expensive things like TABS,
I am trying to preserve the tree as best I can with single lags.
Thank you for your time.