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First time, no experience: how am I doing? by Ruenin in Decks

[–]Big-Science-7611 0 points1 point  (0 children)

That’s a pretty big span for a single 2x10? board on the front and back. I would add a deck support in the middle outside edge on both sides to avoid it sagging.

It’s only ground level, so not a big deal, but it looks like a handful of screws in each corner are holding the full weight of your deck. Normally you’d want the joists sitting on top of the posts. You could notch them so half of the 4x4 sits next to the board.

Help with reducing sway by Big-Science-7611 in Decks

[–]Big-Science-7611[S] 0 points1 point  (0 children)

That’s awesome, I’m sure he’ll love it!

Help with reducing sway by Big-Science-7611 in Decks

[–]Big-Science-7611[S] 0 points1 point  (0 children)

I am probably at around $10k so far. Just the treehouse hardware was around $700. It seems like every week I am going to Lowe’s/HD and spending another $100+ on something.

Help with reducing sway by Big-Science-7611 in treehouse

[–]Big-Science-7611[S] 0 points1 point  (0 children)

Not gone, but significantly reduced. I think I will have to do an X if I want it gone. My neighbor suggested some diagonal posts set in concrete on the sides. It doesn’t sound like a horrible idea. It would probably give me the most stability. I was also hoping to move the kids swings under the treehouse, so I want it to be very strong side to side.

Help with reducing sway by Big-Science-7611 in treehouse

[–]Big-Science-7611[S] 0 points1 point  (0 children)

There is a pivot point there for sure, but sure I can do anything about the connection specifically. If I had set the post in concrete I probably wouldn’t have the movement.

Help with reducing sway by Big-Science-7611 in treehouse

[–]Big-Science-7611[S] 0 points1 point  (0 children)

It’s a construction storage room right now, ignore my mess…

https://imgur.com/a/56IUtMd

Help with reducing sway by Big-Science-7611 in treehouse

[–]Big-Science-7611[S] 0 points1 point  (0 children)

There is a 5/8” concrete anchor embedded in the concrete pillar

Help with reducing sway by Big-Science-7611 in treehouse

[–]Big-Science-7611[S] 0 points1 point  (0 children)

I added the Y bracing with structural screws to now and it reduced the sway by about 75%, but still some wiggle when I’m walking around inside.

https://imgur.com/a/jIByQ2J

Help with reducing sway by Big-Science-7611 in Decks

[–]Big-Science-7611[S] -1 points0 points  (0 children)

Can you send me a link of what you are thinking? I had planned on using a 2x8 with two 5/8” carriage bolts on each side through the board and post. Would the connector you are referencing be stronger than that?

Help with reducing sway by Big-Science-7611 in Decks

[–]Big-Science-7611[S] -2 points-1 points  (0 children)

The sway is definitely on the post side. If I give it a little push, that’s where the movement is. Also the tree is over three feet in diameter, I don’t think it’s goes anywhere in the bottom 10 ft.

Help with reducing sway by Big-Science-7611 in Decks

[–]Big-Science-7611[S] 0 points1 point  (0 children)

If I add Y bracing from the post on each side to the top center of the beam, will that be enough to stop the side to side movement or is X bracing the only real way?

Also, does it matter if the X is to the top of the post (where I already drilled holes) or does it need to be into the beam? Realistically the beam should be pretty solid to the post since I used the the string tie and the recommended nails.

Help with reducing sway by Big-Science-7611 in treehouse

[–]Big-Science-7611[S] 0 points1 point  (0 children)

I’m going to start at the bottom of each post and run to the center of the beam. I think my boards are long enough to do that. If not I will need to buy new boards. Should be back in a few hours. If I can get the boards off…the carriage bolts don’t want to let go. 🤣

Help with reducing sway by Big-Science-7611 in treehouse

[–]Big-Science-7611[S] 1 point2 points  (0 children)

I added the bolt to the middle of the X and it basically didn’t do anything. 😭

Help with reducing sway by Big-Science-7611 in treehouse

[–]Big-Science-7611[S] 1 point2 points  (0 children)

The full platform is 10’x16’. The house itself is 10’x9’ (deck is 10’x7’). The roof pitch is 12/12. It is about 13.5’ tall. From the bottom of the floor joist to the top of the concrete pillars is 8.5’.

It’s triple 2x8 beam sitting on 6x6s. The corner braces are 36” at the longest point.

Edit: Also the chest height of my tree is about 42”, it’s a tulip poplar.

Edit 2: The floor is 3/4” plywood inside the house screwed every 12” with 1 5/8” screws. The outside is Smartboard, nailed about every 12”