Tall deck sway


Old 08-18-15, 08:00 PM
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Tall deck sway

Recently completed the construction of 25 x 30 boat house with a flat roof / deck built on an existing dock. The structure is 11 feet high and sits on steel I beams with 14 - 6x6 posts. My issue is that the deck has a slight sway that I am looking to eliminate or reduce. I have installed 6x6 cross bracing on most posts and have reinforced the I beam to eliminate movement at the foundation. Despite a stable foundation and cross bracing the 6x6's are flexing. Due to access I can not cross brace to the bottom of the posts. My thoughts are to reinforce the 6x6's with aluminum C channel to stiffin the 6x6's. Has anyone had this experience and are there other suggestion?

Separated from... http://www.doityourself.com/forum/de...long-deck.html

Last edited by PJmax; 08-18-15 at 08:24 PM. Reason: started new thread
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Old 08-18-15, 08:27 PM
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Welcome to the forums neighbor !

I started a new thread for you. The other one is already too long and not really directly related to your problem.

I don't have an answer off the top of my head but I can tell you that pictures are a big help.
Old 08-19-15, 04:30 AM
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Are your posts firmly attached to concrete footings? Being associated with a dock, I have my reservations. Maybe you could post a few pictures so we can see what you see. http://www.doityourself.com/forum/el...your-post.html

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