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I know it's a stretch, but I've been having a problem explaining a problem I'm having in search forums and results to get the answer I need, and I figure, hey - there area lot of guys and gals making roasters so some may have an answer to my dilema.

Here's a sketch
https://docs.goog...sp=sharing

Basically, I've made a triangle shaped frame that is a "treehouse" base. I say "treehouse" because the tree is in the middle. I didn't want to nail into the tree or anything, so I've done a basic 4x4 free standing structure, kind of like a deck.

Basically it's wobbly. whenever I push on the "front" sides left or right, the whole things sways side to side. I've tried putting some boards on the end of the triangle to firm it up, but it's still wobbly. Is there any way to reduce the wobble? I'm afraid after I put all the boards up for the floor and nail down some plywood it will still sway back and forth. A lot of time and money for an unknown situation.

Thanks in advance.

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I use to build roof trusses in my youth, you need internal bracing like this http://www.homead...afters.htm You may need more than one set depending on how tall it is, i.e. apply bracing in 3 dimensions.

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If I'm looking at this correctly, there are three upright posts. If that is the case, x-bracing should do the trick. I used to set scaffolding. The right triangle that we see from the top should have framework like an x on both perpendicular sides. The diagonal side may not need an x.My 2 cents

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I was wondering about this. Yes you are correct - 3 vertical posts. That point at the "top" actually is bolted to my shed for some stability, so I think some X braced sides would shore up the wobble. I may also place some of those truss like patterns on the joists for the floor too. Not knowing much about real tree houses, I figured this method of construction would be the easiest and most tree friendly.

Thanks for the feedback.